Preston ~p RC flying safe safe modeler shares concerns reader survey proposals solicited flying publicly owned sites RC SAFETY November 1985 issue Model Builder magazine contained letter see Bill Northrops Workbench page 6 publisher Dave Abbe expressing some concerns about safety RC model aircraft operation Dave cited number reasons criticism aimed RC equipment manufac turers news media national organization letter concluded following some personal thoughts five items 1 manufacturer does pro vide comprehensive operating instructions radio equipment may well com promising position should ever have Continued page 16 strongly recommend follow ing steps taken national radio control safety effort launched commit tee representatives national clubs modelers manufacturers suppli ers insurers develop maintain acceptable standards RC hobby sanctioned publicly-organized fashion targeted 1991 frequency rules implementation standards must include 1 uniform informative manufacturers operating instructions 2 Standardization manufacturers interchangeability parts wherever possi ble covering servos batteries switch harnesses RC format etc 3 Maintenance mandatory safety checks sanctioned flying sites load ed ESV measurement transmitter receiver batteries before flight use 4 Contest range checks control flutter certification added batteryquality test Requirement aircraft over certain size/weight have adequate safety redundancy built assure mini mum risk event control/battery failure 5 Proper stationing fliers points prevent harmonic interference between transmitters Before ask reader input Daves recommendations would like voice K II REE IN ThE U1TLES5X IS TJIE NEW FAT YOL4 OEI, AMP IN THE BI 50K ThE VY COMReJ4EAJSIVE 6PgATe INSTRUCflON l-1AIJUAL 14 Model Aviation Reader Questlonnaim Send letter postcard John Preston address end column answers questions 1 Would like see uniform informative operating instructions included new RC equipment 2 Would like see RC equipment manufacturers standardize products parts manufacturer could interchanged another manufacturer indicate following RO components would like see interchangeable 2a Servos 2b BatterIes 2c Switch harnesses 2d RC format 2e Other please state 3 Do believe RO flying sites flying operations controlled AMA chartered club should require condition transmitter receiver batteries checked before flight 4 Do believe following Items should subject mandatory check prior flight AMA-sanctioned contest 4a Radio range check 4b Battery TX & Rx quality chock 4c Likelihood control surfaces will subject flutter 4d Models over specified weight state what weight should have built-in safety redun dancy such backup Rx battery fall-safe device retard throttle event Rx battery failure 5 Do believe RO flying sites operated RO clubs chartered AMA should specify locations pilots model airplane air 6 Any other suggestions improve RC flying safety ptease state Show Colors BECAUSE WERE PROUD OF THEM take lot pride building model So guess color paint youre choosing finish take time put paint chip can Perfect Paint color youre buying color want . take guesswork out finishing P0 Box 2480 usky Ohio 44870 Ph 419 627-1877 So love work balsa wood want build airplane unique Quickie See dealer today available call 800-826-7042 toll free ORDERS ONLY h ST CROIX MODELS OX 279 S PARK FALLS WI 54552 misfortune named defend ant product liability suit stemming model-airplane-related accident Several such lawsuits involving nonmodel-related products appear have hinged question whether man ufacturer provided sufficient instructional material user together ade quate warnings what might result instructions followed regular job No dont work full time AMA have considerable involvement developing safety stand ards products Most stand ards have included sections concerning structions user cautionary statements alert user hazards associated product may obvious user average skill experience Most often development standards has spearheaded trade association Since such association ex ists RC equipment manufacturers might appropriate body consider need guidelines essential elements operating maintenance structions AMA should have voice committee undertakes job developing guidelines operating instructions since AMA association users products question think AMA appropriate associa tion lead such effort 2 appears Dave Abbe alone desire see standardization components assure interchangeabili ty SJ Casden expressed similar feelings letter editor Model Aviation page 10 January 1986 issue think also issue would best ad dressed trade association representing manufacturers Standardizing compo nents such connectors switch harness es servos may desirable users manufacturers may have good techni cal economic reasons wanting standardize Connectors goldplated pins might desirable some us may vital reliable operation equipment 3 requirement mandatory safety checks sanctioned flying sites sounds good first reading could certainly reduce probability crash resulting lack equipment maintenance such battery failure However Im sure what Dave means sanctioned flying sites Im assuming means flying fields operated AMA-chartered clubs mail receive appears some such clubs have difficulty just enforcing mandatory rule fliers should AMA members Enforce ment mandatory equipment checks might difficultor impossible opinion batteries likely checked checking procedure quick simple September 1985 safety column mentioned board device checking state Continued page 18 16 Model Aviation full-size Quickie remarkable homebuilt airplane achieves amaz ingl20mphand80mpgpowered byan 18 hp eninel Now can build fly /4-scale RIC model sleek little canard quality fit die-cut balsa ply parts good will really enjoy building kit Excellent plans instructions guide step-by-step snag-Tree rewarding building experi ence kit includes wood custom metal parts generous hardware package ABS cowl clear canopy.even scale documentation SURPRISE Quickie EASY TO FLY handles much like conventional sport-40 type model J U U U U U U U U U U U U U U U EEEEEEEEEEuEEE.E U U U U U U U U U U U U I U I U U DAVE ROBELENS PRONTO AND SUPER PRONTO HIGH QUALITY 48 SPAN KIT FOR 09 TO 25 ENGINES FEATURES AIowwirdesrgnwithligh wirrg sthbility arid excetent inverted pedrimarEe GenlletortlrenoviceFunfortlre expert versatle pefiurnarEe 46 hour raid-llre assembly begeirrer Precision machon cut SIB balsa plywcxxl add spruce Rolled full size plarre showirrg 11w creoplete wirrg Slepby-step iosthJcfroris easy assembly Formed mn lardrrg gear Exceptional small lieki performance May fiorr 1 3 clunnels Tested recommended arKi apprnved PJC Mrideler \~zine add Motel Aviation -July 1984 Reti $3995 Reti $4995 fle*r ader m yaf ekIIrut m srck dealer order direct post paid delivery Virginia residents add 40/ sales tax TIDEWATER HOBBY ENTERPRISES 1 Route 1 Box 2410 Lenexe Vrginia 23089 Phone 1804 966-5092 2 ** For Long Engine Life ** Use BRU LINE Air Cleaner Completely Fuel Proof Nylon Rubber Parts Cat No 102 Air Cleaner Coarse Cat No 202 Air Cleaner Fine Replacement Inserts Cat No 104 Pk/2 Inserts Coarse Cat No 204 Pk/2 Inserts Fine $225 $225 $195 $195 FITS MOST ENGINES 25 UP receiver batteries push button known Batt-Chek RX-1 manufactured Pro-Tune Corp Pro Tune has advertisement device page 144 check favorite hobby dealer call company 914 462-6452 4 Dave has two suggestions item No 4 Im going address sepa rately Requiring radio range-check control flutter-check battery-quality test contest certainly good suggestion same time feasible under taking Nats contestants already famil iar RC transmitter processing proce dures ensure outputs stated frequency Range battery checks should easily included takes manpower time right equipment Checks control surfaces associated linkage minimize likeli hood flutter during flight already requirement prior flight contests fly ins sanctioned International Mim ature Aircraft Association IMAA could similarly required AMAsanctioned contests However dont believe loss control due flutter common loss control due bat tery other radio equipment problems Daves suggestion should requirement redundancy event control battery failure also recommendation IMAA Aircraft Size & Safety Guidelines As alterna tive fail-safe devices avail able will close engine throttle event receiver batteries become weak during flight 5 placement pilots too close another several RC models flown simultaneously has often stat ed source self-generated radio terference writing column January 1986 issue MA arrived mail Lo behold Radio Tech nique column George Myers has wealth data resulting tests con cerning very subject Since Im electronics expert Im going make comments about would urge RCers read Georges January col umn pay attention what has say As suggests might want conduct tests own notify him results Im including questionnaire col umn solicit thorgghts need implement Dave Abbes suggestions However before fill answers questions Id like briefly discuss suggestions could implement ed such implementation believed necessary two responses Daves sug gestions mentioned trade associa tion may appropriate body improve current situation Dan Lieberman president RCHTA Continued page 20 18 Model Aviation U U U U U U U U U U U U U U U U U EU.. U.. EU SIG QUALITY FUELS Special Igmters Improve cold starting idle characteristicsU High Film Strength Additives increase lubricity provide maximum lean run protection * Special Detergents help prevent varnish promote clean burning * Rust Preventatives protect expensive engines corrosion SIG CHAMPION 2-STROKE FUEL FREIGHT FREE SHIPPING ON ORDERS OVER $1500COLLECT PINTQUARTGALLON 55GAL DRUM 0%Nitromethane$315$450$1050$19000 5%Nitromethane$365$525$1250$25800 10%Nitromethane$415$550$1450$32500 15%Nitromethane$430$625$1650$38500 25%Nitromethane$495$750$2095$52000 35%Nitromethane$575$875$2495$66000 SIGPREMIUM 4-STROKE FUEL 10%Nitromethane$415$550$1395$29500 15%Nitromethane$425$625$1595$35900 THE CHOICE OF CHAMPION FLYERS over 20 years SIG has blending fuel finest qualify ingreoierits anal able alcohol 995% pure very nest grade available nitromethane use tOO% pure get honest portion baneo % volume Aod maximum lubrication get perfect 5050 b end Bakers AA Castor Oil ann Klotz Technylate Racisg Oil protect expensive engines tbe nest qualityfuel can mane price Dont take word try some udge vo.iseifi See dealer first available order direct Call ____ 800-247-5008 toll free orders Latest Catalog $ 300 ____ SIG MANUFACTURING CO Montezuma IA 50171 V1S4 Prinen sanieci iflangewinoninuilne YOUR LOCAL HOBBY DEALER IF UNAVAILABLE LOCALLY SEND TO Add 75 shippingMichigan residents add 4% sales tax Bru Line Industries Inc PO Box 3786 Center Line Michigan 48015 7 L POSt CURE CYANOACRYLATE SPECIAL INTRODUCTORY OFFER ListSaleSavings 1 oz Fast Cure 3-5 Sec495$250% Off 2 oz Fast Cure 3-5 Sec895$39656% Off 1 oz Gap-Filling 5 Sec$249500/0 Off 2 oz Gap-Filling 5 Sec895$39656% Off OUR GUARANTEE TO YOU satisfied POSI-CURE please return unused portion within 30 days full refundNo questions asked SHELDONS HOBBY SHOP 3157 Alum Rock Ave Jose CA 95127 FOR ORDERS ONLY PLEASEVISK 800 228-3237408 251-0789 Out State INFO 408 251-0787 California SHIPPING per order Hours Mom-Wed Fri & Sat 930-530 FAST SERVICE Thur 930-900 1200-500 COD ADD $190 RC equipment manufacturers association Donald Reisman president Hobby Industry Association HIA represents manufacturers prod ucts use hobby sen timents improve RC equipment instruc tions standardize components RCHTA and/or HIA could coordinate combined effort manufacturers users latter could selected AMA because interest exper tise Some readers may aware already AMA Safety Commit tee existence committee com posed three membersJim McNeil Dave Brown Johnny Clemenswho also members AMA Executive Council has advisory board 17 members Thirteen advisory board members represent way anoth er RC model-flying activities other words what Im saying already have means examine merits Dave Abbes suggestions improving safety RC flight operations $10000 question whether really need additional rules guidelines improve safety RC model flying answers ques tions questionnaire will helpful determining such need simplify task response postcard simple Yes No opposite question number will suffice However have strong feelings -x PRECISION MADE EXPANDED BEAD POLYSTYRENE REPLACEMENT WING & STAB CORES FOR ALL POPULAR RIC AIRCRAFt OVER 250 DIFFERENT WINGS IN STOCK FOR IMMEDIATE DELIVERY SO IF YOU HAVE WRITE US ~AFAVORITEBIRDTHATNEEDSAWINGCALLOR CRYSTAL CLEAR THERMOFORMED CANOPIES 2 DRESS UP YOUR PLANE WITH NEW CANOPY FROM WING MFG TOP QUALITY TOOLING & MATERIAL MAKES THESE SECOND TO NONE WE HAVE LOTS OF SHAPES & SIZES IN STOCK WHICH FIT MOST KITS & SCRATCH BUILT MODELS L WING MFG PO BOX 33 CRYSTAL LAKE IL 60014 PhOne 615/459-0417 VISIT OUR OUTLET STORE AT 15 MORGAN STREET IN CRYSTAL LAKE IL SEND $350 FOR DESCRIPTIVE PRODUCT CATALOG FOAM WING CORES issues welcome put paper form letter will forward summary responses AMA Safety Committee consideration addition publishing results poll future Safety column publicly-owned flying sites December 1985 issue asked read ers inputs ensure fliers county- city-owned flying sites ade quately covered liability insurance published early response issue Russell Knetzger February 1986 column Since Ive several letters subject letter Albert Powell Long Island RC Society enclosed copy rules must observed order fly parks supervised Long Island State Park & Recreation Commis sion rules require flier apply permit costs $750 per month $4500 annually addition fee Commission requires applicant show proof he/she has liability insur ance coverage amount $500000 AMA membership provides double amount coverage certificate stating may obtained AMAchartered club chapter writing AMAHQ seems solution non insured flier problem see December 85 issue flying sites parks lobby Continued page 129 20 Model Aviation NFWUCT S WINGEE ALL YOU NEED Mount Swingee like hinge Completely built-in out sight No flexy torque rods ailerons just simple pushrods straight Swingee Use direct servo control-horn linkage away Kwick-links bell-cranks eliminate sloppy control surfaces scale soaring pattern pylon sport flyer built-in Swingee makes clean aerodynamic lines naturally improves both appearance performance Swingee made Delrin totally unaffected change temperature USA Dealer [AE rn/c mcJ PO Box 511 F HIGGINSVILLE MO 64037 816-584-7121 Dealer inquiries invited World distributor G L INTERNATIONAL AB PO Box 3459 5-162 03 VALLINGEY SWEDEN John Brown Santa Ana CA John sent copies 40 pages book called Modelmaking9 book edited Raymond F Yates well-known writer time article Model Submarine Radio Control did list author perhaps Yates himself just cant resist including submarine story though its heavy-weight RC gear wasnt suitable plane subject 8-ft-long 175-lb submarine radio controls steering electric motors propulsion transmitter 2-in spark gap abroad band frequencies receiver coherer detector Maximum range 300 feet highly-detailed drawings pho tos convincing no descrip tion public demonstration However annotation book pub lished time wireless work experimental nature prohibited United States Government wasnt too surprising US involved war time date 1918 during World War I surmise RC submarine project started before WW almost finished wireless prohibi tion prevented actual RC demonstra tions known whether later tests performed believed article published originally Evety day Engineering Magazine 1917 1918 Can anyone help solve mystery submarine model may have first hobby RC project US really dont know know model plane really what story about Summary now know precursors set stage invention hobby RC model planes gas engines gas models Browns Bassetts early 1 930s amateur radio hams knowledge interest hobby level direct application radio techniques military RC projects 1 920s demonstrated technical feas ibility no means offered direct transition hobby RC commercial radio industry pro vided some circuits components no direct help application toward hobby RC up modelers hams blend together results pre cursors working RC model plane next installment well see met challenge recount early stumbling steps first-ever RC compe tition 1937 National Contest Detroit References Zaic Frank Junior Aeronautics Year Book New York Model Aeronautics Publications 1934 2Ritchie Dave Maxwell Bassett First Gas Model Champion ModelAviation Septem ber 1983 Fabrney DS Rear Admiral USN ret Robert Strobell Americas First Pilotless Aircraft Aero Digest FR FLIUNT ROLLED PLANS UT PARTS Y 1 /2A FULL KIT $2795 A-B FULL KIT3995 B-C-B PRO KIT 4495 B-C-B FULL KIT 5995 SHIPPING $250 EA KIT PRE-PAY OR COD/CA RES ADD 6-1/2% TAX 4Mirick CB Wild Goose Chase USN Institute Proceedings Vol 72 Whole No 521 July 1946 Middlebrook Carlton Interview February 28 1985 6Sosic GV Tesla Father RC Model Aviation March 1976 7Miessner BF Early History Radio Guidance San Francisco San Francisco Press 1964 9DeSoto Clinton B 200 Meters Down W Hartford ARRL Inc 1936 9Yates Raymond F ed Modelmaking New York Norman W Henley Publishing Co 1919 Safety Preston Continued page 20 Park Authority city county etc pass ordinance would require use permit turn would require surance coverage According Russell Knetzger cheapest way obtaln lia bility insurance join AMA Most letters received subject addressed question deter flier AMA member March 1986 129 An entirely new generation controlhinges now available model builder unique design Swingee will benefit 11 i T II'I ELECTRIC POWER OR GLO-ENGINES PROP HUB ASSEMBLY # 10915 21 size engines electric motor equivalent Weight 85 grams$l5N PROP BLADES FOR HUB # 100 Available 7s 25 7x 3 7s 35 Bs 4 $400 per blade $600 per pair PROP HU3 ASSEMBLY # 110 049 051 engines electric motor equivalent Weight 5 grams $150 PROP BLADES FOR NUB # 110 lable 6x 3 $400 per blade $600 per pair PROP HUB ASSEMBLY # Ill 0 engines electric motor equivalent 20 grams $2000 PROP ULADES FOR HUB # lii lable 9 x 4 10 x 411 s 4 $5N per blade SlON per pair Send SSAE catalog sheet complete line features new Fabtronics Mark 3 CDl pointless system Once treat mill system wont settle anything less coupled 4 cycle have Best Two Worlds works equally well 2 cycles twins two cylindars model size engine unit comes pre-drilled disk sensor clamp mounting sensor engine 90 day warranty complete structions conversion timing procedure Unit operates 48 volt low current drain weight mere 2 oz size 2 x 2 x 75 inches Complete system comes ignition coil spark plug on/off switch ignition cable also available seperately Batteries cluded Please state engine size use ordering Converting ignition has ad vantages such tremendous saving fuel less mess no burned-out plugs bet ter idle name few Nearly engine can easily con verted can switch unit plane car boat helicopter another Installation very easy no special tools needed Automatic Spark Advance now available 4 cycle engines Complete system$6995 cash MO Certifed Check plus $300 P & H Personal checks take time clear Illinois residents please add tax Brochure ndable purchase FABTRONICS 375 Isle Royale Rd Galesburg IL 61401 TICK OFF TIMER Now Available 0-20 Seconds Fuel shut off Flood Off Auto rudder function Weight 02 Fuel line included 14 Limited supply EXTRA FUEL UNE TUBINGSO-- ft DIRECT ORDER ONLY Send Cash Check MO COD 83 extrs Calif 6% LENGTH7/ExtraTip *995 APPROX$125 ONE STEEL AND ONE BRASS TIP Send Check Money Order M & W MODELS PO Box 6827 Huntington Beach CA 92615 Add 150 Pont & Hand CA Res add 6% tax suggested method frequency con trol shown AMA rule book page 128 1986-87 book re quires insert AMA member ship card pocket frequency control board remove fre quency control clip must possession before turn trans mitter concerned about losing AMA cards system could amended permit using copy cards lieu originals prerequisite flying partic ular field membership club system identifying paid-up members used Northern Virginia RC Club worth considering Upon payment nual dues club issues colored stickers attachment members transmitters color changes year year issue printed stickers Proof AMA membership has provided NVRC members renew club memberships So presence appro priate sticker members transmitter signifies both current club AMA membership quick check trans mitter impound rack flying field readily identifies delinquent dues payment Servo-screw integrity few issues ago ran letter Peter Young alleged use self-tapping screws hold together two halves servo cases good practice may work loose because engine vibration during flight Another reader Jay Stevens has formed too experienced problem like Peter now uses dab epoxy screws prevent loosening As alternative epoxy Glen Grady Port St Lucie FL suggests using finger nail polish Glen has successfully used nail polish secure screws cameras used record data jet engines full-scale aircraft thinks nail polish will just effective epoxy securing servo screws will permit easier sqrew removal should servo need disassembled servicing Electric starters Before signing off month word caution use electric starters engines equipped spinner also comes Glen Grady witnessed acci dent fellow club member visit hospital have piece pro peller removed chest mod eler attempting start 40-size four-stroke equipped wooden prop no spinner Glen did state whether prop secured AMA prop nut letter described what happened follows starter used con stantly would spin off-center throwing rubber cone starter out just happened did time cone flew out engine fired up throttle wide open plane lurched forward starter because cone come out vibration starter spinnerless prop loosened grip airplane prop hit starter shattered sending piece wood chest about half inch Fortunately modeler inci dent seriously injured Neverthe less Glen suggests starters should used engine unless spinner used never start engine throttle wide open have add latter tip applies throttle-equipped engines Free Flight Power Control Line modelers careful Have safe month John Preston 12235 Tilden wood Dr Rockvile MD 20852 Radio Technique/Myers Continued page 41 Non-Aircraft band Now AMA anyone matter supposed go about organizing such diverse group what purpose agreed call meeting upcoming Toledo show industry special-interest groups eg cars boats discuss frequency problems 5 In technical session discus130 Model Aviation fl7HAMMER QUADRA-SCALE PzL P-23A KARAS Poish econ ard lgh bomber 95 rise lev0 ece pior erg t zrarrel obeai05 FII-sze pints 53h 00 ObrAOaid r U S Corn Io reassal ,zlOed LARRY GORDON 2sh0 GOLDEN SHORES CT FENTON MICH 48430 343 629-5786 JOHN TATONE 164 School St City CA 94014 4157563400
Edition: Model Aviation - 1986/03
Page Numbers: 14, 16, 18, 20, 129, 130
Preston ~p RC flying safe safe modeler shares concerns reader survey proposals solicited flying publicly owned sites RC SAFETY November 1985 issue Model Builder magazine contained letter see Bill Northrops Workbench page 6 publisher Dave Abbe expressing some concerns about safety RC model aircraft operation Dave cited number reasons criticism aimed RC equipment manufac turers news media national organization letter concluded following some personal thoughts five items 1 manufacturer does pro vide comprehensive operating instructions radio equipment may well com promising position should ever have Continued page 16 strongly recommend follow ing steps taken national radio control safety effort launched commit tee representatives national clubs modelers manufacturers suppli ers insurers develop maintain acceptable standards RC hobby sanctioned publicly-organized fashion targeted 1991 frequency rules implementation standards must include 1 uniform informative manufacturers operating instructions 2 Standardization manufacturers interchangeability parts wherever possi ble covering servos batteries switch harnesses RC format etc 3 Maintenance mandatory safety checks sanctioned flying sites load ed ESV measurement transmitter receiver batteries before flight use 4 Contest range checks control flutter certification added batteryquality test Requirement aircraft over certain size/weight have adequate safety redundancy built assure mini mum risk event control/battery failure 5 Proper stationing fliers points prevent harmonic interference between transmitters Before ask reader input Daves recommendations would like voice K II REE IN ThE U1TLES5X IS TJIE NEW FAT YOL4 OEI, AMP IN THE BI 50K ThE VY COMReJ4EAJSIVE 6PgATe INSTRUCflON l-1AIJUAL 14 Model Aviation Reader Questlonnaim Send letter postcard John Preston address end column answers questions 1 Would like see uniform informative operating instructions included new RC equipment 2 Would like see RC equipment manufacturers standardize products parts manufacturer could interchanged another manufacturer indicate following RO components would like see interchangeable 2a Servos 2b BatterIes 2c Switch harnesses 2d RC format 2e Other please state 3 Do believe RO flying sites flying operations controlled AMA chartered club should require condition transmitter receiver batteries checked before flight 4 Do believe following Items should subject mandatory check prior flight AMA-sanctioned contest 4a Radio range check 4b Battery TX & Rx quality chock 4c Likelihood control surfaces will subject flutter 4d Models over specified weight state what weight should have built-in safety redun dancy such backup Rx battery fall-safe device retard throttle event Rx battery failure 5 Do believe RO flying sites operated RO clubs chartered AMA should specify locations pilots model airplane air 6 Any other suggestions improve RC flying safety ptease state Show Colors BECAUSE WERE PROUD OF THEM take lot pride building model So guess color paint youre choosing finish take time put paint chip can Perfect Paint color youre buying color want . take guesswork out finishing P0 Box 2480 usky Ohio 44870 Ph 419 627-1877 So love work balsa wood want build airplane unique Quickie See dealer today available call 800-826-7042 toll free ORDERS ONLY h ST CROIX MODELS OX 279 S PARK FALLS WI 54552 misfortune named defend ant product liability suit stemming model-airplane-related accident Several such lawsuits involving nonmodel-related products appear have hinged question whether man ufacturer provided sufficient instructional material user together ade quate warnings what might result instructions followed regular job No dont work full time AMA have considerable involvement developing safety stand ards products Most stand ards have included sections concerning structions user cautionary statements alert user hazards associated product may obvious user average skill experience Most often development standards has spearheaded trade association Since such association ex ists RC equipment manufacturers might appropriate body consider need guidelines essential elements operating maintenance structions AMA should have voice committee undertakes job developing guidelines operating instructions since AMA association users products question think AMA appropriate associa tion lead such effort 2 appears Dave Abbe alone desire see standardization components assure interchangeabili ty SJ Casden expressed similar feelings letter editor Model Aviation page 10 January 1986 issue think also issue would best ad dressed trade association representing manufacturers Standardizing compo nents such connectors switch harness es servos may desirable users manufacturers may have good techni cal economic reasons wanting standardize Connectors goldplated pins might desirable some us may vital reliable operation equipment 3 requirement mandatory safety checks sanctioned flying sites sounds good first reading could certainly reduce probability crash resulting lack equipment maintenance such battery failure However Im sure what Dave means sanctioned flying sites Im assuming means flying fields operated AMA-chartered clubs mail receive appears some such clubs have difficulty just enforcing mandatory rule fliers should AMA members Enforce ment mandatory equipment checks might difficultor impossible opinion batteries likely checked checking procedure quick simple September 1985 safety column mentioned board device checking state Continued page 18 16 Model Aviation full-size Quickie remarkable homebuilt airplane achieves amaz ingl20mphand80mpgpowered byan 18 hp eninel Now can build fly /4-scale RIC model sleek little canard quality fit die-cut balsa ply parts good will really enjoy building kit Excellent plans instructions guide step-by-step snag-Tree rewarding building experi ence kit includes wood custom metal parts generous hardware package ABS cowl clear canopy.even scale documentation SURPRISE Quickie EASY TO FLY handles much like conventional sport-40 type model J U U U U U U U U U U U U U U U EEEEEEEEEEuEEE.E U U U U U U U U U U U U I U I U U DAVE ROBELENS PRONTO AND SUPER PRONTO HIGH QUALITY 48 SPAN KIT FOR 09 TO 25 ENGINES FEATURES AIowwirdesrgnwithligh wirrg sthbility arid excetent inverted pedrimarEe GenlletortlrenoviceFunfortlre expert versatle pefiurnarEe 46 hour raid-llre assembly begeirrer Precision machon cut SIB balsa plywcxxl add spruce Rolled full size plarre showirrg 11w creoplete wirrg Slepby-step iosthJcfroris easy assembly Formed mn lardrrg gear Exceptional small lieki performance May fiorr 1 3 clunnels Tested recommended arKi apprnved PJC Mrideler \~zine add Motel Aviation -July 1984 Reti $3995 Reti $4995 fle*r ader m yaf ekIIrut m srck dealer order direct post paid delivery Virginia residents add 40/ sales tax TIDEWATER HOBBY ENTERPRISES 1 Route 1 Box 2410 Lenexe Vrginia 23089 Phone 1804 966-5092 2 ** For Long Engine Life ** Use BRU LINE Air Cleaner Completely Fuel Proof Nylon Rubber Parts Cat No 102 Air Cleaner Coarse Cat No 202 Air Cleaner Fine Replacement Inserts Cat No 104 Pk/2 Inserts Coarse Cat No 204 Pk/2 Inserts Fine $225 $225 $195 $195 FITS MOST ENGINES 25 UP receiver batteries push button known Batt-Chek RX-1 manufactured Pro-Tune Corp Pro Tune has advertisement device page 144 check favorite hobby dealer call company 914 462-6452 4 Dave has two suggestions item No 4 Im going address sepa rately Requiring radio range-check control flutter-check battery-quality test contest certainly good suggestion same time feasible under taking Nats contestants already famil iar RC transmitter processing proce dures ensure outputs stated frequency Range battery checks should easily included takes manpower time right equipment Checks control surfaces associated linkage minimize likeli hood flutter during flight already requirement prior flight contests fly ins sanctioned International Mim ature Aircraft Association IMAA could similarly required AMAsanctioned contests However dont believe loss control due flutter common loss control due bat tery other radio equipment problems Daves suggestion should requirement redundancy event control battery failure also recommendation IMAA Aircraft Size & Safety Guidelines As alterna tive fail-safe devices avail able will close engine throttle event receiver batteries become weak during flight 5 placement pilots too close another several RC models flown simultaneously has often stat ed source self-generated radio terference writing column January 1986 issue MA arrived mail Lo behold Radio Tech nique column George Myers has wealth data resulting tests con cerning very subject Since Im electronics expert Im going make comments about would urge RCers read Georges January col umn pay attention what has say As suggests might want conduct tests own notify him results Im including questionnaire col umn solicit thorgghts need implement Dave Abbes suggestions However before fill answers questions Id like briefly discuss suggestions could implement ed such implementation believed necessary two responses Daves sug gestions mentioned trade associa tion may appropriate body improve current situation Dan Lieberman president RCHTA Continued page 20 18 Model Aviation U U U U U U U U U U U U U U U U U EU.. U.. EU SIG QUALITY FUELS Special Igmters Improve cold starting idle characteristicsU High Film Strength Additives increase lubricity provide maximum lean run protection * Special Detergents help prevent varnish promote clean burning * Rust Preventatives protect expensive engines corrosion SIG CHAMPION 2-STROKE FUEL FREIGHT FREE SHIPPING ON ORDERS OVER $1500COLLECT PINTQUARTGALLON 55GAL DRUM 0%Nitromethane$315$450$1050$19000 5%Nitromethane$365$525$1250$25800 10%Nitromethane$415$550$1450$32500 15%Nitromethane$430$625$1650$38500 25%Nitromethane$495$750$2095$52000 35%Nitromethane$575$875$2495$66000 SIGPREMIUM 4-STROKE FUEL 10%Nitromethane$415$550$1395$29500 15%Nitromethane$425$625$1595$35900 THE CHOICE OF CHAMPION FLYERS over 20 years SIG has blending fuel finest qualify ingreoierits anal able alcohol 995% pure very nest grade available nitromethane use tOO% pure get honest portion baneo % volume Aod maximum lubrication get perfect 5050 b end Bakers AA Castor Oil ann Klotz Technylate Racisg Oil protect expensive engines tbe nest qualityfuel can mane price Dont take word try some udge vo.iseifi See dealer first available order direct Call ____ 800-247-5008 toll free orders Latest Catalog $ 300 ____ SIG MANUFACTURING CO Montezuma IA 50171 V1S4 Prinen sanieci iflangewinoninuilne YOUR LOCAL HOBBY DEALER IF UNAVAILABLE LOCALLY SEND TO Add 75 shippingMichigan residents add 4% sales tax Bru Line Industries Inc PO Box 3786 Center Line Michigan 48015 7 L POSt CURE CYANOACRYLATE SPECIAL INTRODUCTORY OFFER ListSaleSavings 1 oz Fast Cure 3-5 Sec495$250% Off 2 oz Fast Cure 3-5 Sec895$39656% Off 1 oz Gap-Filling 5 Sec$249500/0 Off 2 oz Gap-Filling 5 Sec895$39656% Off OUR GUARANTEE TO YOU satisfied POSI-CURE please return unused portion within 30 days full refundNo questions asked SHELDONS HOBBY SHOP 3157 Alum Rock Ave Jose CA 95127 FOR ORDERS ONLY PLEASEVISK 800 228-3237408 251-0789 Out State INFO 408 251-0787 California SHIPPING per order Hours Mom-Wed Fri & Sat 930-530 FAST SERVICE Thur 930-900 1200-500 COD ADD $190 RC equipment manufacturers association Donald Reisman president Hobby Industry Association HIA represents manufacturers prod ucts use hobby sen timents improve RC equipment instruc tions standardize components RCHTA and/or HIA could coordinate combined effort manufacturers users latter could selected AMA because interest exper tise Some readers may aware already AMA Safety Commit tee existence committee com posed three membersJim McNeil Dave Brown Johnny Clemenswho also members AMA Executive Council has advisory board 17 members Thirteen advisory board members represent way anoth er RC model-flying activities other words what Im saying already have means examine merits Dave Abbes suggestions improving safety RC flight operations $10000 question whether really need additional rules guidelines improve safety RC model flying answers ques tions questionnaire will helpful determining such need simplify task response postcard simple Yes No opposite question number will suffice However have strong feelings -x PRECISION MADE EXPANDED BEAD POLYSTYRENE REPLACEMENT WING & STAB CORES FOR ALL POPULAR RIC AIRCRAFt OVER 250 DIFFERENT WINGS IN STOCK FOR IMMEDIATE DELIVERY SO IF YOU HAVE WRITE US ~AFAVORITEBIRDTHATNEEDSAWINGCALLOR CRYSTAL CLEAR THERMOFORMED CANOPIES 2 DRESS UP YOUR PLANE WITH NEW CANOPY FROM WING MFG TOP QUALITY TOOLING & MATERIAL MAKES THESE SECOND TO NONE WE HAVE LOTS OF SHAPES & SIZES IN STOCK WHICH FIT MOST KITS & SCRATCH BUILT MODELS L WING MFG PO BOX 33 CRYSTAL LAKE IL 60014 PhOne 615/459-0417 VISIT OUR OUTLET STORE AT 15 MORGAN STREET IN CRYSTAL LAKE IL SEND $350 FOR DESCRIPTIVE PRODUCT CATALOG FOAM WING CORES issues welcome put paper form letter will forward summary responses AMA Safety Committee consideration addition publishing results poll future Safety column publicly-owned flying sites December 1985 issue asked read ers inputs ensure fliers county- city-owned flying sites ade quately covered liability insurance published early response issue Russell Knetzger February 1986 column Since Ive several letters subject letter Albert Powell Long Island RC Society enclosed copy rules must observed order fly parks supervised Long Island State Park & Recreation Commis sion rules require flier apply permit costs $750 per month $4500 annually addition fee Commission requires applicant show proof he/she has liability insur ance coverage amount $500000 AMA membership provides double amount coverage certificate stating may obtained AMAchartered club chapter writing AMAHQ seems solution non insured flier problem see December 85 issue flying sites parks lobby Continued page 129 20 Model Aviation NFWUCT S WINGEE ALL YOU NEED Mount Swingee like hinge Completely built-in out sight No flexy torque rods ailerons just simple pushrods straight Swingee Use direct servo control-horn linkage away Kwick-links bell-cranks eliminate sloppy control surfaces scale soaring pattern pylon sport flyer built-in Swingee makes clean aerodynamic lines naturally improves both appearance performance Swingee made Delrin totally unaffected change temperature USA Dealer [AE rn/c mcJ PO Box 511 F HIGGINSVILLE MO 64037 816-584-7121 Dealer inquiries invited World distributor G L INTERNATIONAL AB PO Box 3459 5-162 03 VALLINGEY SWEDEN John Brown Santa Ana CA John sent copies 40 pages book called Modelmaking9 book edited Raymond F Yates well-known writer time article Model Submarine Radio Control did list author perhaps Yates himself just cant resist including submarine story though its heavy-weight RC gear wasnt suitable plane subject 8-ft-long 175-lb submarine radio controls steering electric motors propulsion transmitter 2-in spark gap abroad band frequencies receiver coherer detector Maximum range 300 feet highly-detailed drawings pho tos convincing no descrip tion public demonstration However annotation book pub lished time wireless work experimental nature prohibited United States Government wasnt too surprising US involved war time date 1918 during World War I surmise RC submarine project started before WW almost finished wireless prohibi tion prevented actual RC demonstra tions known whether later tests performed believed article published originally Evety day Engineering Magazine 1917 1918 Can anyone help solve mystery submarine model may have first hobby RC project US really dont know know model plane really what story about Summary now know precursors set stage invention hobby RC model planes gas engines gas models Browns Bassetts early 1 930s amateur radio hams knowledge interest hobby level direct application radio techniques military RC projects 1 920s demonstrated technical feas ibility no means offered direct transition hobby RC commercial radio industry pro vided some circuits components no direct help application toward hobby RC up modelers hams blend together results pre cursors working RC model plane next installment well see met challenge recount early stumbling steps first-ever RC compe tition 1937 National Contest Detroit References Zaic Frank Junior Aeronautics Year Book New York Model Aeronautics Publications 1934 2Ritchie Dave Maxwell Bassett First Gas Model Champion ModelAviation Septem ber 1983 Fabrney DS Rear Admiral USN ret Robert Strobell Americas First Pilotless Aircraft Aero Digest FR FLIUNT ROLLED PLANS UT PARTS Y 1 /2A FULL KIT $2795 A-B FULL KIT3995 B-C-B PRO KIT 4495 B-C-B FULL KIT 5995 SHIPPING $250 EA KIT PRE-PAY OR COD/CA RES ADD 6-1/2% TAX 4Mirick CB Wild Goose Chase USN Institute Proceedings Vol 72 Whole No 521 July 1946 Middlebrook Carlton Interview February 28 1985 6Sosic GV Tesla Father RC Model Aviation March 1976 7Miessner BF Early History Radio Guidance San Francisco San Francisco Press 1964 9DeSoto Clinton B 200 Meters Down W Hartford ARRL Inc 1936 9Yates Raymond F ed Modelmaking New York Norman W Henley Publishing Co 1919 Safety Preston Continued page 20 Park Authority city county etc pass ordinance would require use permit turn would require surance coverage According Russell Knetzger cheapest way obtaln lia bility insurance join AMA Most letters received subject addressed question deter flier AMA member March 1986 129 An entirely new generation controlhinges now available model builder unique design Swingee will benefit 11 i T II'I ELECTRIC POWER OR GLO-ENGINES PROP HUB ASSEMBLY # 10915 21 size engines electric motor equivalent Weight 85 grams$l5N PROP BLADES FOR HUB # 100 Available 7s 25 7x 3 7s 35 Bs 4 $400 per blade $600 per pair PROP HU3 ASSEMBLY # 110 049 051 engines electric motor equivalent Weight 5 grams $150 PROP BLADES FOR NUB # 110 lable 6x 3 $400 per blade $600 per pair PROP HUB ASSEMBLY # Ill 0 engines electric motor equivalent 20 grams $2000 PROP ULADES FOR HUB # lii lable 9 x 4 10 x 411 s 4 $5N per blade SlON per pair Send SSAE catalog sheet complete line features new Fabtronics Mark 3 CDl pointless system Once treat mill system wont settle anything less coupled 4 cycle have Best Two Worlds works equally well 2 cycles twins two cylindars model size engine unit comes pre-drilled disk sensor clamp mounting sensor engine 90 day warranty complete structions conversion timing procedure Unit operates 48 volt low current drain weight mere 2 oz size 2 x 2 x 75 inches Complete system comes ignition coil spark plug on/off switch ignition cable also available seperately Batteries cluded Please state engine size use ordering Converting ignition has ad vantages such tremendous saving fuel less mess no burned-out plugs bet ter idle name few Nearly engine can easily con verted can switch unit plane car boat helicopter another Installation very easy no special tools needed Automatic Spark Advance now available 4 cycle engines Complete system$6995 cash MO Certifed Check plus $300 P & H Personal checks take time clear Illinois residents please add tax Brochure ndable purchase FABTRONICS 375 Isle Royale Rd Galesburg IL 61401 TICK OFF TIMER Now Available 0-20 Seconds Fuel shut off Flood Off Auto rudder function Weight 02 Fuel line included 14 Limited supply EXTRA FUEL UNE TUBINGSO-- ft DIRECT ORDER ONLY Send Cash Check MO COD 83 extrs Calif 6% LENGTH7/ExtraTip *995 APPROX$125 ONE STEEL AND ONE BRASS TIP Send Check Money Order M & W MODELS PO Box 6827 Huntington Beach CA 92615 Add 150 Pont & Hand CA Res add 6% tax suggested method frequency con trol shown AMA rule book page 128 1986-87 book re quires insert AMA member ship card pocket frequency control board remove fre quency control clip must possession before turn trans mitter concerned about losing AMA cards system could amended permit using copy cards lieu originals prerequisite flying partic ular field membership club system identifying paid-up members used Northern Virginia RC Club worth considering Upon payment nual dues club issues colored stickers attachment members transmitters color changes year year issue printed stickers Proof AMA membership has provided NVRC members renew club memberships So presence appro priate sticker members transmitter signifies both current club AMA membership quick check trans mitter impound rack flying field readily identifies delinquent dues payment Servo-screw integrity few issues ago ran letter Peter Young alleged use self-tapping screws hold together two halves servo cases good practice may work loose because engine vibration during flight Another reader Jay Stevens has formed too experienced problem like Peter now uses dab epoxy screws prevent loosening As alternative epoxy Glen Grady Port St Lucie FL suggests using finger nail polish Glen has successfully used nail polish secure screws cameras used record data jet engines full-scale aircraft thinks nail polish will just effective epoxy securing servo screws will permit easier sqrew removal should servo need disassembled servicing Electric starters Before signing off month word caution use electric starters engines equipped spinner also comes Glen Grady witnessed acci dent fellow club member visit hospital have piece pro peller removed chest mod eler attempting start 40-size four-stroke equipped wooden prop no spinner Glen did state whether prop secured AMA prop nut letter described what happened follows starter used con stantly would spin off-center throwing rubber cone starter out just happened did time cone flew out engine fired up throttle wide open plane lurched forward starter because cone come out vibration starter spinnerless prop loosened grip airplane prop hit starter shattered sending piece wood chest about half inch Fortunately modeler inci dent seriously injured Neverthe less Glen suggests starters should used engine unless spinner used never start engine throttle wide open have add latter tip applies throttle-equipped engines Free Flight Power Control Line modelers careful Have safe month John Preston 12235 Tilden wood Dr Rockvile MD 20852 Radio Technique/Myers Continued page 41 Non-Aircraft band Now AMA anyone matter supposed go about organizing such diverse group what purpose agreed call meeting upcoming Toledo show industry special-interest groups eg cars boats discuss frequency problems 5 In technical session discus130 Model Aviation fl7HAMMER QUADRA-SCALE PzL P-23A KARAS Poish econ ard lgh bomber 95 rise lev0 ece pior erg t zrarrel obeai05 FII-sze pints 53h 00 ObrAOaid r U S Corn Io reassal ,zlOed LARRY GORDON 2sh0 GOLDEN SHORES CT FENTON MICH 48430 343 629-5786 JOHN TATONE 164 School St City CA 94014 4157563400
Edition: Model Aviation - 1986/03
Page Numbers: 14, 16, 18, 20, 129, 130
Preston ~p RC flying safe safe modeler shares concerns reader survey proposals solicited flying publicly owned sites RC SAFETY November 1985 issue Model Builder magazine contained letter see Bill Northrops Workbench page 6 publisher Dave Abbe expressing some concerns about safety RC model aircraft operation Dave cited number reasons criticism aimed RC equipment manufac turers news media national organization letter concluded following some personal thoughts five items 1 manufacturer does pro vide comprehensive operating instructions radio equipment may well com promising position should ever have Continued page 16 strongly recommend follow ing steps taken national radio control safety effort launched commit tee representatives national clubs modelers manufacturers suppli ers insurers develop maintain acceptable standards RC hobby sanctioned publicly-organized fashion targeted 1991 frequency rules implementation standards must include 1 uniform informative manufacturers operating instructions 2 Standardization manufacturers interchangeability parts wherever possi ble covering servos batteries switch harnesses RC format etc 3 Maintenance mandatory safety checks sanctioned flying sites load ed ESV measurement transmitter receiver batteries before flight use 4 Contest range checks control flutter certification added batteryquality test Requirement aircraft over certain size/weight have adequate safety redundancy built assure mini mum risk event control/battery failure 5 Proper stationing fliers points prevent harmonic interference between transmitters Before ask reader input Daves recommendations would like voice K II REE IN ThE U1TLES5X IS TJIE NEW FAT YOL4 OEI, AMP IN THE BI 50K ThE VY COMReJ4EAJSIVE 6PgATe INSTRUCflON l-1AIJUAL 14 Model Aviation Reader Questlonnaim Send letter postcard John Preston address end column answers questions 1 Would like see uniform informative operating instructions included new RC equipment 2 Would like see RC equipment manufacturers standardize products parts manufacturer could interchanged another manufacturer indicate following RO components would like see interchangeable 2a Servos 2b BatterIes 2c Switch harnesses 2d RC format 2e Other please state 3 Do believe RO flying sites flying operations controlled AMA chartered club should require condition transmitter receiver batteries checked before flight 4 Do believe following Items should subject mandatory check prior flight AMA-sanctioned contest 4a Radio range check 4b Battery TX & Rx quality chock 4c Likelihood control surfaces will subject flutter 4d Models over specified weight state what weight should have built-in safety redun dancy such backup Rx battery fall-safe device retard throttle event Rx battery failure 5 Do believe RO flying sites operated RO clubs chartered AMA should specify locations pilots model airplane air 6 Any other suggestions improve RC flying safety ptease state Show Colors BECAUSE WERE PROUD OF THEM take lot pride building model So guess color paint youre choosing finish take time put paint chip can Perfect Paint color youre buying color want . take guesswork out finishing P0 Box 2480 usky Ohio 44870 Ph 419 627-1877 So love work balsa wood want build airplane unique Quickie See dealer today available call 800-826-7042 toll free ORDERS ONLY h ST CROIX MODELS OX 279 S PARK FALLS WI 54552 misfortune named defend ant product liability suit stemming model-airplane-related accident Several such lawsuits involving nonmodel-related products appear have hinged question whether man ufacturer provided sufficient instructional material user together ade quate warnings what might result instructions followed regular job No dont work full time AMA have considerable involvement developing safety stand ards products Most stand ards have included sections concerning structions user cautionary statements alert user hazards associated product may obvious user average skill experience Most often development standards has spearheaded trade association Since such association ex ists RC equipment manufacturers might appropriate body consider need guidelines essential elements operating maintenance structions AMA should have voice committee undertakes job developing guidelines operating instructions since AMA association users products question think AMA appropriate associa tion lead such effort 2 appears Dave Abbe alone desire see standardization components assure interchangeabili ty SJ Casden expressed similar feelings letter editor Model Aviation page 10 January 1986 issue think also issue would best ad dressed trade association representing manufacturers Standardizing compo nents such connectors switch harness es servos may desirable users manufacturers may have good techni cal economic reasons wanting standardize Connectors goldplated pins might desirable some us may vital reliable operation equipment 3 requirement mandatory safety checks sanctioned flying sites sounds good first reading could certainly reduce probability crash resulting lack equipment maintenance such battery failure However Im sure what Dave means sanctioned flying sites Im assuming means flying fields operated AMA-chartered clubs mail receive appears some such clubs have difficulty just enforcing mandatory rule fliers should AMA members Enforce ment mandatory equipment checks might difficultor impossible opinion batteries likely checked checking procedure quick simple September 1985 safety column mentioned board device checking state Continued page 18 16 Model Aviation full-size Quickie remarkable homebuilt airplane achieves amaz ingl20mphand80mpgpowered byan 18 hp eninel Now can build fly /4-scale RIC model sleek little canard quality fit die-cut balsa ply parts good will really enjoy building kit Excellent plans instructions guide step-by-step snag-Tree rewarding building experi ence kit includes wood custom metal parts generous hardware package ABS cowl clear canopy.even scale documentation SURPRISE Quickie EASY TO FLY handles much like conventional sport-40 type model J U U U U U U U U U U U U U U U EEEEEEEEEEuEEE.E U U U U U U U U U U U U I U I U U DAVE ROBELENS PRONTO AND SUPER PRONTO HIGH QUALITY 48 SPAN KIT FOR 09 TO 25 ENGINES FEATURES AIowwirdesrgnwithligh wirrg sthbility arid excetent inverted pedrimarEe GenlletortlrenoviceFunfortlre expert versatle pefiurnarEe 46 hour raid-llre assembly begeirrer Precision machon cut SIB balsa plywcxxl add spruce Rolled full size plarre showirrg 11w creoplete wirrg Slepby-step iosthJcfroris easy assembly Formed mn lardrrg gear Exceptional small lieki performance May fiorr 1 3 clunnels Tested recommended arKi apprnved PJC Mrideler \~zine add Motel Aviation -July 1984 Reti $3995 Reti $4995 fle*r ader m yaf ekIIrut m srck dealer order direct post paid delivery Virginia residents add 40/ sales tax TIDEWATER HOBBY ENTERPRISES 1 Route 1 Box 2410 Lenexe Vrginia 23089 Phone 1804 966-5092 2 ** For Long Engine Life ** Use BRU LINE Air Cleaner Completely Fuel Proof Nylon Rubber Parts Cat No 102 Air Cleaner Coarse Cat No 202 Air Cleaner Fine Replacement Inserts Cat No 104 Pk/2 Inserts Coarse Cat No 204 Pk/2 Inserts Fine $225 $225 $195 $195 FITS MOST ENGINES 25 UP receiver batteries push button known Batt-Chek RX-1 manufactured Pro-Tune Corp Pro Tune has advertisement device page 144 check favorite hobby dealer call company 914 462-6452 4 Dave has two suggestions item No 4 Im going address sepa rately Requiring radio range-check control flutter-check battery-quality test contest certainly good suggestion same time feasible under taking Nats contestants already famil iar RC transmitter processing proce dures ensure outputs stated frequency Range battery checks should easily included takes manpower time right equipment Checks control surfaces associated linkage minimize likeli hood flutter during flight already requirement prior flight contests fly ins sanctioned International Mim ature Aircraft Association IMAA could similarly required AMAsanctioned contests However dont believe loss control due flutter common loss control due bat tery other radio equipment problems Daves suggestion should requirement redundancy event control battery failure also recommendation IMAA Aircraft Size & Safety Guidelines As alterna tive fail-safe devices avail able will close engine throttle event receiver batteries become weak during flight 5 placement pilots too close another several RC models flown simultaneously has often stat ed source self-generated radio terference writing column January 1986 issue MA arrived mail Lo behold Radio Tech nique column George Myers has wealth data resulting tests con cerning very subject Since Im electronics expert Im going make comments about would urge RCers read Georges January col umn pay attention what has say As suggests might want conduct tests own notify him results Im including questionnaire col umn solicit thorgghts need implement Dave Abbes suggestions However before fill answers questions Id like briefly discuss suggestions could implement ed such implementation believed necessary two responses Daves sug gestions mentioned trade associa tion may appropriate body improve current situation Dan Lieberman president RCHTA Continued page 20 18 Model Aviation U U U U U U U U U U U U U U U U U EU.. U.. EU SIG QUALITY FUELS Special Igmters Improve cold starting idle characteristicsU High Film Strength Additives increase lubricity provide maximum lean run protection * Special Detergents help prevent varnish promote clean burning * Rust Preventatives protect expensive engines corrosion SIG CHAMPION 2-STROKE FUEL FREIGHT FREE SHIPPING ON ORDERS OVER $1500COLLECT PINTQUARTGALLON 55GAL DRUM 0%Nitromethane$315$450$1050$19000 5%Nitromethane$365$525$1250$25800 10%Nitromethane$415$550$1450$32500 15%Nitromethane$430$625$1650$38500 25%Nitromethane$495$750$2095$52000 35%Nitromethane$575$875$2495$66000 SIGPREMIUM 4-STROKE FUEL 10%Nitromethane$415$550$1395$29500 15%Nitromethane$425$625$1595$35900 THE CHOICE OF CHAMPION FLYERS over 20 years SIG has blending fuel finest qualify ingreoierits anal able alcohol 995% pure very nest grade available nitromethane use tOO% pure get honest portion baneo % volume Aod maximum lubrication get perfect 5050 b end Bakers AA Castor Oil ann Klotz Technylate Racisg Oil protect expensive engines tbe nest qualityfuel can mane price Dont take word try some udge vo.iseifi See dealer first available order direct Call ____ 800-247-5008 toll free orders Latest Catalog $ 300 ____ SIG MANUFACTURING CO Montezuma IA 50171 V1S4 Prinen sanieci iflangewinoninuilne YOUR LOCAL HOBBY DEALER IF UNAVAILABLE LOCALLY SEND TO Add 75 shippingMichigan residents add 4% sales tax Bru Line Industries Inc PO Box 3786 Center Line Michigan 48015 7 L POSt CURE CYANOACRYLATE SPECIAL INTRODUCTORY OFFER ListSaleSavings 1 oz Fast Cure 3-5 Sec495$250% Off 2 oz Fast Cure 3-5 Sec895$39656% Off 1 oz Gap-Filling 5 Sec$249500/0 Off 2 oz Gap-Filling 5 Sec895$39656% Off OUR GUARANTEE TO YOU satisfied POSI-CURE please return unused portion within 30 days full refundNo questions asked SHELDONS HOBBY SHOP 3157 Alum Rock Ave Jose CA 95127 FOR ORDERS ONLY PLEASEVISK 800 228-3237408 251-0789 Out State INFO 408 251-0787 California SHIPPING per order Hours Mom-Wed Fri & Sat 930-530 FAST SERVICE Thur 930-900 1200-500 COD ADD $190 RC equipment manufacturers association Donald Reisman president Hobby Industry Association HIA represents manufacturers prod ucts use hobby sen timents improve RC equipment instruc tions standardize components RCHTA and/or HIA could coordinate combined effort manufacturers users latter could selected AMA because interest exper tise Some readers may aware already AMA Safety Commit tee existence committee com posed three membersJim McNeil Dave Brown Johnny Clemenswho also members AMA Executive Council has advisory board 17 members Thirteen advisory board members represent way anoth er RC model-flying activities other words what Im saying already have means examine merits Dave Abbes suggestions improving safety RC flight operations $10000 question whether really need additional rules guidelines improve safety RC model flying answers ques tions questionnaire will helpful determining such need simplify task response postcard simple Yes No opposite question number will suffice However have strong feelings -x PRECISION MADE EXPANDED BEAD POLYSTYRENE REPLACEMENT WING & STAB CORES FOR ALL POPULAR RIC AIRCRAFt OVER 250 DIFFERENT WINGS IN STOCK FOR IMMEDIATE DELIVERY SO IF YOU HAVE WRITE US ~AFAVORITEBIRDTHATNEEDSAWINGCALLOR CRYSTAL CLEAR THERMOFORMED CANOPIES 2 DRESS UP YOUR PLANE WITH NEW CANOPY FROM WING MFG TOP QUALITY TOOLING & MATERIAL MAKES THESE SECOND TO NONE WE HAVE LOTS OF SHAPES & SIZES IN STOCK WHICH FIT MOST KITS & SCRATCH BUILT MODELS L WING MFG PO BOX 33 CRYSTAL LAKE IL 60014 PhOne 615/459-0417 VISIT OUR OUTLET STORE AT 15 MORGAN STREET IN CRYSTAL LAKE IL SEND $350 FOR DESCRIPTIVE PRODUCT CATALOG FOAM WING CORES issues welcome put paper form letter will forward summary responses AMA Safety Committee consideration addition publishing results poll future Safety column publicly-owned flying sites December 1985 issue asked read ers inputs ensure fliers county- city-owned flying sites ade quately covered liability insurance published early response issue Russell Knetzger February 1986 column Since Ive several letters subject letter Albert Powell Long Island RC Society enclosed copy rules must observed order fly parks supervised Long Island State Park & Recreation Commis sion rules require flier apply permit costs $750 per month $4500 annually addition fee Commission requires applicant show proof he/she has liability insur ance coverage amount $500000 AMA membership provides double amount coverage certificate stating may obtained AMAchartered club chapter writing AMAHQ seems solution non insured flier problem see December 85 issue flying sites parks lobby Continued page 129 20 Model Aviation NFWUCT S WINGEE ALL YOU NEED Mount Swingee like hinge Completely built-in out sight No flexy torque rods ailerons just simple pushrods straight Swingee Use direct servo control-horn linkage away Kwick-links bell-cranks eliminate sloppy control surfaces scale soaring pattern pylon sport flyer built-in Swingee makes clean aerodynamic lines naturally improves both appearance performance Swingee made Delrin totally unaffected change temperature USA Dealer [AE rn/c mcJ PO Box 511 F HIGGINSVILLE MO 64037 816-584-7121 Dealer inquiries invited World distributor G L INTERNATIONAL AB PO Box 3459 5-162 03 VALLINGEY SWEDEN John Brown Santa Ana CA John sent copies 40 pages book called Modelmaking9 book edited Raymond F Yates well-known writer time article Model Submarine Radio Control did list author perhaps Yates himself just cant resist including submarine story though its heavy-weight RC gear wasnt suitable plane subject 8-ft-long 175-lb submarine radio controls steering electric motors propulsion transmitter 2-in spark gap abroad band frequencies receiver coherer detector Maximum range 300 feet highly-detailed drawings pho tos convincing no descrip tion public demonstration However annotation book pub lished time wireless work experimental nature prohibited United States Government wasnt too surprising US involved war time date 1918 during World War I surmise RC submarine project started before WW almost finished wireless prohibi tion prevented actual RC demonstra tions known whether later tests performed believed article published originally Evety day Engineering Magazine 1917 1918 Can anyone help solve mystery submarine model may have first hobby RC project US really dont know know model plane really what story about Summary now know precursors set stage invention hobby RC model planes gas engines gas models Browns Bassetts early 1 930s amateur radio hams knowledge interest hobby level direct application radio techniques military RC projects 1 920s demonstrated technical feas ibility no means offered direct transition hobby RC commercial radio industry pro vided some circuits components no direct help application toward hobby RC up modelers hams blend together results pre cursors working RC model plane next installment well see met challenge recount early stumbling steps first-ever RC compe tition 1937 National Contest Detroit References Zaic Frank Junior Aeronautics Year Book New York Model Aeronautics Publications 1934 2Ritchie Dave Maxwell Bassett First Gas Model Champion ModelAviation Septem ber 1983 Fabrney DS Rear Admiral USN ret Robert Strobell Americas First Pilotless Aircraft Aero Digest FR FLIUNT ROLLED PLANS UT PARTS Y 1 /2A FULL KIT $2795 A-B FULL KIT3995 B-C-B PRO KIT 4495 B-C-B FULL KIT 5995 SHIPPING $250 EA KIT PRE-PAY OR COD/CA RES ADD 6-1/2% TAX 4Mirick CB Wild Goose Chase USN Institute Proceedings Vol 72 Whole No 521 July 1946 Middlebrook Carlton Interview February 28 1985 6Sosic GV Tesla Father RC Model Aviation March 1976 7Miessner BF Early History Radio Guidance San Francisco San Francisco Press 1964 9DeSoto Clinton B 200 Meters Down W Hartford ARRL Inc 1936 9Yates Raymond F ed Modelmaking New York Norman W Henley Publishing Co 1919 Safety Preston Continued page 20 Park Authority city county etc pass ordinance would require use permit turn would require surance coverage According Russell Knetzger cheapest way obtaln lia bility insurance join AMA Most letters received subject addressed question deter flier AMA member March 1986 129 An entirely new generation controlhinges now available model builder unique design Swingee will benefit 11 i T II'I ELECTRIC POWER OR GLO-ENGINES PROP HUB ASSEMBLY # 10915 21 size engines electric motor equivalent Weight 85 grams$l5N PROP BLADES FOR HUB # 100 Available 7s 25 7x 3 7s 35 Bs 4 $400 per blade $600 per pair PROP HU3 ASSEMBLY # 110 049 051 engines electric motor equivalent Weight 5 grams $150 PROP BLADES FOR NUB # 110 lable 6x 3 $400 per blade $600 per pair PROP HUB ASSEMBLY # Ill 0 engines electric motor equivalent 20 grams $2000 PROP ULADES FOR HUB # lii lable 9 x 4 10 x 411 s 4 $5N per blade SlON per pair Send SSAE catalog sheet complete line features new Fabtronics Mark 3 CDl pointless system Once treat mill system wont settle anything less coupled 4 cycle have Best Two Worlds works equally well 2 cycles twins two cylindars model size engine unit comes pre-drilled disk sensor clamp mounting sensor engine 90 day warranty complete structions conversion timing procedure Unit operates 48 volt low current drain weight mere 2 oz size 2 x 2 x 75 inches Complete system comes ignition coil spark plug on/off switch ignition cable also available seperately Batteries cluded Please state engine size use ordering Converting ignition has ad vantages such tremendous saving fuel less mess no burned-out plugs bet ter idle name few Nearly engine can easily con verted can switch unit plane car boat helicopter another Installation very easy no special tools needed Automatic Spark Advance now available 4 cycle engines Complete system$6995 cash MO Certifed Check plus $300 P & H Personal checks take time clear Illinois residents please add tax Brochure ndable purchase FABTRONICS 375 Isle Royale Rd Galesburg IL 61401 TICK OFF TIMER Now Available 0-20 Seconds Fuel shut off Flood Off Auto rudder function Weight 02 Fuel line included 14 Limited supply EXTRA FUEL UNE TUBINGSO-- ft DIRECT ORDER ONLY Send Cash Check MO COD 83 extrs Calif 6% LENGTH7/ExtraTip *995 APPROX$125 ONE STEEL AND ONE BRASS TIP Send Check Money Order M & W MODELS PO Box 6827 Huntington Beach CA 92615 Add 150 Pont & Hand CA Res add 6% tax suggested method frequency con trol shown AMA rule book page 128 1986-87 book re quires insert AMA member ship card pocket frequency control board remove fre quency control clip must possession before turn trans mitter concerned about losing AMA cards system could amended permit using copy cards lieu originals prerequisite flying partic ular field membership club system identifying paid-up members used Northern Virginia RC Club worth considering Upon payment nual dues club issues colored stickers attachment members transmitters color changes year year issue printed stickers Proof AMA membership has provided NVRC members renew club memberships So presence appro priate sticker members transmitter signifies both current club AMA membership quick check trans mitter impound rack flying field readily identifies delinquent dues payment Servo-screw integrity few issues ago ran letter Peter Young alleged use self-tapping screws hold together two halves servo cases good practice may work loose because engine vibration during flight Another reader Jay Stevens has formed too experienced problem like Peter now uses dab epoxy screws prevent loosening As alternative epoxy Glen Grady Port St Lucie FL suggests using finger nail polish Glen has successfully used nail polish secure screws cameras used record data jet engines full-scale aircraft thinks nail polish will just effective epoxy securing servo screws will permit easier sqrew removal should servo need disassembled servicing Electric starters Before signing off month word caution use electric starters engines equipped spinner also comes Glen Grady witnessed acci dent fellow club member visit hospital have piece pro peller removed chest mod eler attempting start 40-size four-stroke equipped wooden prop no spinner Glen did state whether prop secured AMA prop nut letter described what happened follows starter used con stantly would spin off-center throwing rubber cone starter out just happened did time cone flew out engine fired up throttle wide open plane lurched forward starter because cone come out vibration starter spinnerless prop loosened grip airplane prop hit starter shattered sending piece wood chest about half inch Fortunately modeler inci dent seriously injured Neverthe less Glen suggests starters should used engine unless spinner used never start engine throttle wide open have add latter tip applies throttle-equipped engines Free Flight Power Control Line modelers careful Have safe month John Preston 12235 Tilden wood Dr Rockvile MD 20852 Radio Technique/Myers Continued page 41 Non-Aircraft band Now AMA anyone matter supposed go about organizing such diverse group what purpose agreed call meeting upcoming Toledo show industry special-interest groups eg cars boats discuss frequency problems 5 In technical session discus130 Model Aviation fl7HAMMER QUADRA-SCALE PzL P-23A KARAS Poish econ ard lgh bomber 95 rise lev0 ece pior erg t zrarrel obeai05 FII-sze pints 53h 00 ObrAOaid r U S Corn Io reassal ,zlOed LARRY GORDON 2sh0 GOLDEN SHORES CT FENTON MICH 48430 343 629-5786 JOHN TATONE 164 School St City CA 94014 4157563400
Edition: Model Aviation - 1986/03
Page Numbers: 14, 16, 18, 20, 129, 130
Preston ~p RC flying safe safe modeler shares concerns reader survey proposals solicited flying publicly owned sites RC SAFETY November 1985 issue Model Builder magazine contained letter see Bill Northrops Workbench page 6 publisher Dave Abbe expressing some concerns about safety RC model aircraft operation Dave cited number reasons criticism aimed RC equipment manufac turers news media national organization letter concluded following some personal thoughts five items 1 manufacturer does pro vide comprehensive operating instructions radio equipment may well com promising position should ever have Continued page 16 strongly recommend follow ing steps taken national radio control safety effort launched commit tee representatives national clubs modelers manufacturers suppli ers insurers develop maintain acceptable standards RC hobby sanctioned publicly-organized fashion targeted 1991 frequency rules implementation standards must include 1 uniform informative manufacturers operating instructions 2 Standardization manufacturers interchangeability parts wherever possi ble covering servos batteries switch harnesses RC format etc 3 Maintenance mandatory safety checks sanctioned flying sites load ed ESV measurement transmitter receiver batteries before flight use 4 Contest range checks control flutter certification added batteryquality test Requirement aircraft over certain size/weight have adequate safety redundancy built assure mini mum risk event control/battery failure 5 Proper stationing fliers points prevent harmonic interference between transmitters Before ask reader input Daves recommendations would like voice K II REE IN ThE U1TLES5X IS TJIE NEW FAT YOL4 OEI, AMP IN THE BI 50K ThE VY COMReJ4EAJSIVE 6PgATe INSTRUCflON l-1AIJUAL 14 Model Aviation Reader Questlonnaim Send letter postcard John Preston address end column answers questions 1 Would like see uniform informative operating instructions included new RC equipment 2 Would like see RC equipment manufacturers standardize products parts manufacturer could interchanged another manufacturer indicate following RO components would like see interchangeable 2a Servos 2b BatterIes 2c Switch harnesses 2d RC format 2e Other please state 3 Do believe RO flying sites flying operations controlled AMA chartered club should require condition transmitter receiver batteries checked before flight 4 Do believe following Items should subject mandatory check prior flight AMA-sanctioned contest 4a Radio range check 4b Battery TX & Rx quality chock 4c Likelihood control surfaces will subject flutter 4d Models over specified weight state what weight should have built-in safety redun dancy such backup Rx battery fall-safe device retard throttle event Rx battery failure 5 Do believe RO flying sites operated RO clubs chartered AMA should specify locations pilots model airplane air 6 Any other suggestions improve RC flying safety ptease state Show Colors BECAUSE WERE PROUD OF THEM take lot pride building model So guess color paint youre choosing finish take time put paint chip can Perfect Paint color youre buying color want . take guesswork out finishing P0 Box 2480 usky Ohio 44870 Ph 419 627-1877 So love work balsa wood want build airplane unique Quickie See dealer today available call 800-826-7042 toll free ORDERS ONLY h ST CROIX MODELS OX 279 S PARK FALLS WI 54552 misfortune named defend ant product liability suit stemming model-airplane-related accident Several such lawsuits involving nonmodel-related products appear have hinged question whether man ufacturer provided sufficient instructional material user together ade quate warnings what might result instructions followed regular job No dont work full time AMA have considerable involvement developing safety stand ards products Most stand ards have included sections concerning structions user cautionary statements alert user hazards associated product may obvious user average skill experience Most often development standards has spearheaded trade association Since such association ex ists RC equipment manufacturers might appropriate body consider need guidelines essential elements operating maintenance structions AMA should have voice committee undertakes job developing guidelines operating instructions since AMA association users products question think AMA appropriate associa tion lead such effort 2 appears Dave Abbe alone desire see standardization components assure interchangeabili ty SJ Casden expressed similar feelings letter editor Model Aviation page 10 January 1986 issue think also issue would best ad dressed trade association representing manufacturers Standardizing compo nents such connectors switch harness es servos may desirable users manufacturers may have good techni cal economic reasons wanting standardize Connectors goldplated pins might desirable some us may vital reliable operation equipment 3 requirement mandatory safety checks sanctioned flying sites sounds good first reading could certainly reduce probability crash resulting lack equipment maintenance such battery failure However Im sure what Dave means sanctioned flying sites Im assuming means flying fields operated AMA-chartered clubs mail receive appears some such clubs have difficulty just enforcing mandatory rule fliers should AMA members Enforce ment mandatory equipment checks might difficultor impossible opinion batteries likely checked checking procedure quick simple September 1985 safety column mentioned board device checking state Continued page 18 16 Model Aviation full-size Quickie remarkable homebuilt airplane achieves amaz ingl20mphand80mpgpowered byan 18 hp eninel Now can build fly /4-scale RIC model sleek little canard quality fit die-cut balsa ply parts good will really enjoy building kit Excellent plans instructions guide step-by-step snag-Tree rewarding building experi ence kit includes wood custom metal parts generous hardware package ABS cowl clear canopy.even scale documentation SURPRISE Quickie EASY TO FLY handles much like conventional sport-40 type model J U U U U U U U U U U U U U U U EEEEEEEEEEuEEE.E U U U U U U U U U U U U I U I U U DAVE ROBELENS PRONTO AND SUPER PRONTO HIGH QUALITY 48 SPAN KIT FOR 09 TO 25 ENGINES FEATURES AIowwirdesrgnwithligh wirrg sthbility arid excetent inverted pedrimarEe GenlletortlrenoviceFunfortlre expert versatle pefiurnarEe 46 hour raid-llre assembly begeirrer Precision machon cut SIB balsa plywcxxl add spruce Rolled full size plarre showirrg 11w creoplete wirrg Slepby-step iosthJcfroris easy assembly Formed mn lardrrg gear Exceptional small lieki performance May fiorr 1 3 clunnels Tested recommended arKi apprnved PJC Mrideler \~zine add Motel Aviation -July 1984 Reti $3995 Reti $4995 fle*r ader m yaf ekIIrut m srck dealer order direct post paid delivery Virginia residents add 40/ sales tax TIDEWATER HOBBY ENTERPRISES 1 Route 1 Box 2410 Lenexe Vrginia 23089 Phone 1804 966-5092 2 ** For Long Engine Life ** Use BRU LINE Air Cleaner Completely Fuel Proof Nylon Rubber Parts Cat No 102 Air Cleaner Coarse Cat No 202 Air Cleaner Fine Replacement Inserts Cat No 104 Pk/2 Inserts Coarse Cat No 204 Pk/2 Inserts Fine $225 $225 $195 $195 FITS MOST ENGINES 25 UP receiver batteries push button known Batt-Chek RX-1 manufactured Pro-Tune Corp Pro Tune has advertisement device page 144 check favorite hobby dealer call company 914 462-6452 4 Dave has two suggestions item No 4 Im going address sepa rately Requiring radio range-check control flutter-check battery-quality test contest certainly good suggestion same time feasible under taking Nats contestants already famil iar RC transmitter processing proce dures ensure outputs stated frequency Range battery checks should easily included takes manpower time right equipment Checks control surfaces associated linkage minimize likeli hood flutter during flight already requirement prior flight contests fly ins sanctioned International Mim ature Aircraft Association IMAA could similarly required AMAsanctioned contests However dont believe loss control due flutter common loss control due bat tery other radio equipment problems Daves suggestion should requirement redundancy event control battery failure also recommendation IMAA Aircraft Size & Safety Guidelines As alterna tive fail-safe devices avail able will close engine throttle event receiver batteries become weak during flight 5 placement pilots too close another several RC models flown simultaneously has often stat ed source self-generated radio terference writing column January 1986 issue MA arrived mail Lo behold Radio Tech nique column George Myers has wealth data resulting tests con cerning very subject Since Im electronics expert Im going make comments about would urge RCers read Georges January col umn pay attention what has say As suggests might want conduct tests own notify him results Im including questionnaire col umn solicit thorgghts need implement Dave Abbes suggestions However before fill answers questions Id like briefly discuss suggestions could implement ed such implementation believed necessary two responses Daves sug gestions mentioned trade associa tion may appropriate body improve current situation Dan Lieberman president RCHTA Continued page 20 18 Model Aviation U U U U U U U U U U U U U U U U U EU.. U.. EU SIG QUALITY FUELS Special Igmters Improve cold starting idle characteristicsU High Film Strength Additives increase lubricity provide maximum lean run protection * Special Detergents help prevent varnish promote clean burning * Rust Preventatives protect expensive engines corrosion SIG CHAMPION 2-STROKE FUEL FREIGHT FREE SHIPPING ON ORDERS OVER $1500COLLECT PINTQUARTGALLON 55GAL DRUM 0%Nitromethane$315$450$1050$19000 5%Nitromethane$365$525$1250$25800 10%Nitromethane$415$550$1450$32500 15%Nitromethane$430$625$1650$38500 25%Nitromethane$495$750$2095$52000 35%Nitromethane$575$875$2495$66000 SIGPREMIUM 4-STROKE FUEL 10%Nitromethane$415$550$1395$29500 15%Nitromethane$425$625$1595$35900 THE CHOICE OF CHAMPION FLYERS over 20 years SIG has blending fuel finest qualify ingreoierits anal able alcohol 995% pure very nest grade available nitromethane use tOO% pure get honest portion baneo % volume Aod maximum lubrication get perfect 5050 b end Bakers AA Castor Oil ann Klotz Technylate Racisg Oil protect expensive engines tbe nest qualityfuel can mane price Dont take word try some udge vo.iseifi See dealer first available order direct Call ____ 800-247-5008 toll free orders Latest Catalog $ 300 ____ SIG MANUFACTURING CO Montezuma IA 50171 V1S4 Prinen sanieci iflangewinoninuilne YOUR LOCAL HOBBY DEALER IF UNAVAILABLE LOCALLY SEND TO Add 75 shippingMichigan residents add 4% sales tax Bru Line Industries Inc PO Box 3786 Center Line Michigan 48015 7 L POSt CURE CYANOACRYLATE SPECIAL INTRODUCTORY OFFER ListSaleSavings 1 oz Fast Cure 3-5 Sec495$250% Off 2 oz Fast Cure 3-5 Sec895$39656% Off 1 oz Gap-Filling 5 Sec$249500/0 Off 2 oz Gap-Filling 5 Sec895$39656% Off OUR GUARANTEE TO YOU satisfied POSI-CURE please return unused portion within 30 days full refundNo questions asked SHELDONS HOBBY SHOP 3157 Alum Rock Ave Jose CA 95127 FOR ORDERS ONLY PLEASEVISK 800 228-3237408 251-0789 Out State INFO 408 251-0787 California SHIPPING per order Hours Mom-Wed Fri & Sat 930-530 FAST SERVICE Thur 930-900 1200-500 COD ADD $190 RC equipment manufacturers association Donald Reisman president Hobby Industry Association HIA represents manufacturers prod ucts use hobby sen timents improve RC equipment instruc tions standardize components RCHTA and/or HIA could coordinate combined effort manufacturers users latter could selected AMA because interest exper tise Some readers may aware already AMA Safety Commit tee existence committee com posed three membersJim McNeil Dave Brown Johnny Clemenswho also members AMA Executive Council has advisory board 17 members Thirteen advisory board members represent way anoth er RC model-flying activities other words what Im saying already have means examine merits Dave Abbes suggestions improving safety RC flight operations $10000 question whether really need additional rules guidelines improve safety RC model flying answers ques tions questionnaire will helpful determining such need simplify task response postcard simple Yes No opposite question number will suffice However have strong feelings -x PRECISION MADE EXPANDED BEAD POLYSTYRENE REPLACEMENT WING & STAB CORES FOR ALL POPULAR RIC AIRCRAFt OVER 250 DIFFERENT WINGS IN STOCK FOR IMMEDIATE DELIVERY SO IF YOU HAVE WRITE US ~AFAVORITEBIRDTHATNEEDSAWINGCALLOR CRYSTAL CLEAR THERMOFORMED CANOPIES 2 DRESS UP YOUR PLANE WITH NEW CANOPY FROM WING MFG TOP QUALITY TOOLING & MATERIAL MAKES THESE SECOND TO NONE WE HAVE LOTS OF SHAPES & SIZES IN STOCK WHICH FIT MOST KITS & SCRATCH BUILT MODELS L WING MFG PO BOX 33 CRYSTAL LAKE IL 60014 PhOne 615/459-0417 VISIT OUR OUTLET STORE AT 15 MORGAN STREET IN CRYSTAL LAKE IL SEND $350 FOR DESCRIPTIVE PRODUCT CATALOG FOAM WING CORES issues welcome put paper form letter will forward summary responses AMA Safety Committee consideration addition publishing results poll future Safety column publicly-owned flying sites December 1985 issue asked read ers inputs ensure fliers county- city-owned flying sites ade quately covered liability insurance published early response issue Russell Knetzger February 1986 column Since Ive several letters subject letter Albert Powell Long Island RC Society enclosed copy rules must observed order fly parks supervised Long Island State Park & Recreation Commis sion rules require flier apply permit costs $750 per month $4500 annually addition fee Commission requires applicant show proof he/she has liability insur ance coverage amount $500000 AMA membership provides double amount coverage certificate stating may obtained AMAchartered club chapter writing AMAHQ seems solution non insured flier problem see December 85 issue flying sites parks lobby Continued page 129 20 Model Aviation NFWUCT S WINGEE ALL YOU NEED Mount Swingee like hinge Completely built-in out sight No flexy torque rods ailerons just simple pushrods straight Swingee Use direct servo control-horn linkage away Kwick-links bell-cranks eliminate sloppy control surfaces scale soaring pattern pylon sport flyer built-in Swingee makes clean aerodynamic lines naturally improves both appearance performance Swingee made Delrin totally unaffected change temperature USA Dealer [AE rn/c mcJ PO Box 511 F HIGGINSVILLE MO 64037 816-584-7121 Dealer inquiries invited World distributor G L INTERNATIONAL AB PO Box 3459 5-162 03 VALLINGEY SWEDEN John Brown Santa Ana CA John sent copies 40 pages book called Modelmaking9 book edited Raymond F Yates well-known writer time article Model Submarine Radio Control did list author perhaps Yates himself just cant resist including submarine story though its heavy-weight RC gear wasnt suitable plane subject 8-ft-long 175-lb submarine radio controls steering electric motors propulsion transmitter 2-in spark gap abroad band frequencies receiver coherer detector Maximum range 300 feet highly-detailed drawings pho tos convincing no descrip tion public demonstration However annotation book pub lished time wireless work experimental nature prohibited United States Government wasnt too surprising US involved war time date 1918 during World War I surmise RC submarine project started before WW almost finished wireless prohibi tion prevented actual RC demonstra tions known whether later tests performed believed article published originally Evety day Engineering Magazine 1917 1918 Can anyone help solve mystery submarine model may have first hobby RC project US really dont know know model plane really what story about Summary now know precursors set stage invention hobby RC model planes gas engines gas models Browns Bassetts early 1 930s amateur radio hams knowledge interest hobby level direct application radio techniques military RC projects 1 920s demonstrated technical feas ibility no means offered direct transition hobby RC commercial radio industry pro vided some circuits components no direct help application toward hobby RC up modelers hams blend together results pre cursors working RC model plane next installment well see met challenge recount early stumbling steps first-ever RC compe tition 1937 National Contest Detroit References Zaic Frank Junior Aeronautics Year Book New York Model Aeronautics Publications 1934 2Ritchie Dave Maxwell Bassett First Gas Model Champion ModelAviation Septem ber 1983 Fabrney DS Rear Admiral USN ret Robert Strobell Americas First Pilotless Aircraft Aero Digest FR FLIUNT ROLLED PLANS UT PARTS Y 1 /2A FULL KIT $2795 A-B FULL KIT3995 B-C-B PRO KIT 4495 B-C-B FULL KIT 5995 SHIPPING $250 EA KIT PRE-PAY OR COD/CA RES ADD 6-1/2% TAX 4Mirick CB Wild Goose Chase USN Institute Proceedings Vol 72 Whole No 521 July 1946 Middlebrook Carlton Interview February 28 1985 6Sosic GV Tesla Father RC Model Aviation March 1976 7Miessner BF Early History Radio Guidance San Francisco San Francisco Press 1964 9DeSoto Clinton B 200 Meters Down W Hartford ARRL Inc 1936 9Yates Raymond F ed Modelmaking New York Norman W Henley Publishing Co 1919 Safety Preston Continued page 20 Park Authority city county etc pass ordinance would require use permit turn would require surance coverage According Russell Knetzger cheapest way obtaln lia bility insurance join AMA Most letters received subject addressed question deter flier AMA member March 1986 129 An entirely new generation controlhinges now available model builder unique design Swingee will benefit 11 i T II'I ELECTRIC POWER OR GLO-ENGINES PROP HUB ASSEMBLY # 10915 21 size engines electric motor equivalent Weight 85 grams$l5N PROP BLADES FOR HUB # 100 Available 7s 25 7x 3 7s 35 Bs 4 $400 per blade $600 per pair PROP HU3 ASSEMBLY # 110 049 051 engines electric motor equivalent Weight 5 grams $150 PROP BLADES FOR NUB # 110 lable 6x 3 $400 per blade $600 per pair PROP HUB ASSEMBLY # Ill 0 engines electric motor equivalent 20 grams $2000 PROP ULADES FOR HUB # lii lable 9 x 4 10 x 411 s 4 $5N per blade SlON per pair Send SSAE catalog sheet complete line features new Fabtronics Mark 3 CDl pointless system Once treat mill system wont settle anything less coupled 4 cycle have Best Two Worlds works equally well 2 cycles twins two cylindars model size engine unit comes pre-drilled disk sensor clamp mounting sensor engine 90 day warranty complete structions conversion timing procedure Unit operates 48 volt low current drain weight mere 2 oz size 2 x 2 x 75 inches Complete system comes ignition coil spark plug on/off switch ignition cable also available seperately Batteries cluded Please state engine size use ordering Converting ignition has ad vantages such tremendous saving fuel less mess no burned-out plugs bet ter idle name few Nearly engine can easily con verted can switch unit plane car boat helicopter another Installation very easy no special tools needed Automatic Spark Advance now available 4 cycle engines Complete system$6995 cash MO Certifed Check plus $300 P & H Personal checks take time clear Illinois residents please add tax Brochure ndable purchase FABTRONICS 375 Isle Royale Rd Galesburg IL 61401 TICK OFF TIMER Now Available 0-20 Seconds Fuel shut off Flood Off Auto rudder function Weight 02 Fuel line included 14 Limited supply EXTRA FUEL UNE TUBINGSO-- ft DIRECT ORDER ONLY Send Cash Check MO COD 83 extrs Calif 6% LENGTH7/ExtraTip *995 APPROX$125 ONE STEEL AND ONE BRASS TIP Send Check Money Order M & W MODELS PO Box 6827 Huntington Beach CA 92615 Add 150 Pont & Hand CA Res add 6% tax suggested method frequency con trol shown AMA rule book page 128 1986-87 book re quires insert AMA member ship card pocket frequency control board remove fre quency control clip must possession before turn trans mitter concerned about losing AMA cards system could amended permit using copy cards lieu originals prerequisite flying partic ular field membership club system identifying paid-up members used Northern Virginia RC Club worth considering Upon payment nual dues club issues colored stickers attachment members transmitters color changes year year issue printed stickers Proof AMA membership has provided NVRC members renew club memberships So presence appro priate sticker members transmitter signifies both current club AMA membership quick check trans mitter impound rack flying field readily identifies delinquent dues payment Servo-screw integrity few issues ago ran letter Peter Young alleged use self-tapping screws hold together two halves servo cases good practice may work loose because engine vibration during flight Another reader Jay Stevens has formed too experienced problem like Peter now uses dab epoxy screws prevent loosening As alternative epoxy Glen Grady Port St Lucie FL suggests using finger nail polish Glen has successfully used nail polish secure screws cameras used record data jet engines full-scale aircraft thinks nail polish will just effective epoxy securing servo screws will permit easier sqrew removal should servo need disassembled servicing Electric starters Before signing off month word caution use electric starters engines equipped spinner also comes Glen Grady witnessed acci dent fellow club member visit hospital have piece pro peller removed chest mod eler attempting start 40-size four-stroke equipped wooden prop no spinner Glen did state whether prop secured AMA prop nut letter described what happened follows starter used con stantly would spin off-center throwing rubber cone starter out just happened did time cone flew out engine fired up throttle wide open plane lurched forward starter because cone come out vibration starter spinnerless prop loosened grip airplane prop hit starter shattered sending piece wood chest about half inch Fortunately modeler inci dent seriously injured Neverthe less Glen suggests starters should used engine unless spinner used never start engine throttle wide open have add latter tip applies throttle-equipped engines Free Flight Power Control Line modelers careful Have safe month John Preston 12235 Tilden wood Dr Rockvile MD 20852 Radio Technique/Myers Continued page 41 Non-Aircraft band Now AMA anyone matter supposed go about organizing such diverse group what purpose agreed call meeting upcoming Toledo show industry special-interest groups eg cars boats discuss frequency problems 5 In technical session discus130 Model Aviation fl7HAMMER QUADRA-SCALE PzL P-23A KARAS Poish econ ard lgh bomber 95 rise lev0 ece pior erg t zrarrel obeai05 FII-sze pints 53h 00 ObrAOaid r U S Corn Io reassal ,zlOed LARRY GORDON 2sh0 GOLDEN SHORES CT FENTON MICH 48430 343 629-5786 JOHN TATONE 164 School St City CA 94014 4157563400
Edition: Model Aviation - 1986/03
Page Numbers: 14, 16, 18, 20, 129, 130
Preston ~p RC flying safe safe modeler shares concerns reader survey proposals solicited flying publicly owned sites RC SAFETY November 1985 issue Model Builder magazine contained letter see Bill Northrops Workbench page 6 publisher Dave Abbe expressing some concerns about safety RC model aircraft operation Dave cited number reasons criticism aimed RC equipment manufac turers news media national organization letter concluded following some personal thoughts five items 1 manufacturer does pro vide comprehensive operating instructions radio equipment may well com promising position should ever have Continued page 16 strongly recommend follow ing steps taken national radio control safety effort launched commit tee representatives national clubs modelers manufacturers suppli ers insurers develop maintain acceptable standards RC hobby sanctioned publicly-organized fashion targeted 1991 frequency rules implementation standards must include 1 uniform informative manufacturers operating instructions 2 Standardization manufacturers interchangeability parts wherever possi ble covering servos batteries switch harnesses RC format etc 3 Maintenance mandatory safety checks sanctioned flying sites load ed ESV measurement transmitter receiver batteries before flight use 4 Contest range checks control flutter certification added batteryquality test Requirement aircraft over certain size/weight have adequate safety redundancy built assure mini mum risk event control/battery failure 5 Proper stationing fliers points prevent harmonic interference between transmitters Before ask reader input Daves recommendations would like voice K II REE IN ThE U1TLES5X IS TJIE NEW FAT YOL4 OEI, AMP IN THE BI 50K ThE VY COMReJ4EAJSIVE 6PgATe INSTRUCflON l-1AIJUAL 14 Model Aviation Reader Questlonnaim Send letter postcard John Preston address end column answers questions 1 Would like see uniform informative operating instructions included new RC equipment 2 Would like see RC equipment manufacturers standardize products parts manufacturer could interchanged another manufacturer indicate following RO components would like see interchangeable 2a Servos 2b BatterIes 2c Switch harnesses 2d RC format 2e Other please state 3 Do believe RO flying sites flying operations controlled AMA chartered club should require condition transmitter receiver batteries checked before flight 4 Do believe following Items should subject mandatory check prior flight AMA-sanctioned contest 4a Radio range check 4b Battery TX & Rx quality chock 4c Likelihood control surfaces will subject flutter 4d Models over specified weight state what weight should have built-in safety redun dancy such backup Rx battery fall-safe device retard throttle event Rx battery failure 5 Do believe RO flying sites operated RO clubs chartered AMA should specify locations pilots model airplane air 6 Any other suggestions improve RC flying safety ptease state Show Colors BECAUSE WERE PROUD OF THEM take lot pride building model So guess color paint youre choosing finish take time put paint chip can Perfect Paint color youre buying color want . take guesswork out finishing P0 Box 2480 usky Ohio 44870 Ph 419 627-1877 So love work balsa wood want build airplane unique Quickie See dealer today available call 800-826-7042 toll free ORDERS ONLY h ST CROIX MODELS OX 279 S PARK FALLS WI 54552 misfortune named defend ant product liability suit stemming model-airplane-related accident Several such lawsuits involving nonmodel-related products appear have hinged question whether man ufacturer provided sufficient instructional material user together ade quate warnings what might result instructions followed regular job No dont work full time AMA have considerable involvement developing safety stand ards products Most stand ards have included sections concerning structions user cautionary statements alert user hazards associated product may obvious user average skill experience Most often development standards has spearheaded trade association Since such association ex ists RC equipment manufacturers might appropriate body consider need guidelines essential elements operating maintenance structions AMA should have voice committee undertakes job developing guidelines operating instructions since AMA association users products question think AMA appropriate associa tion lead such effort 2 appears Dave Abbe alone desire see standardization components assure interchangeabili ty SJ Casden expressed similar feelings letter editor Model Aviation page 10 January 1986 issue think also issue would best ad dressed trade association representing manufacturers Standardizing compo nents such connectors switch harness es servos may desirable users manufacturers may have good techni cal economic reasons wanting standardize Connectors goldplated pins might desirable some us may vital reliable operation equipment 3 requirement mandatory safety checks sanctioned flying sites sounds good first reading could certainly reduce probability crash resulting lack equipment maintenance such battery failure However Im sure what Dave means sanctioned flying sites Im assuming means flying fields operated AMA-chartered clubs mail receive appears some such clubs have difficulty just enforcing mandatory rule fliers should AMA members Enforce ment mandatory equipment checks might difficultor impossible opinion batteries likely checked checking procedure quick simple September 1985 safety column mentioned board device checking state Continued page 18 16 Model Aviation full-size Quickie remarkable homebuilt airplane achieves amaz ingl20mphand80mpgpowered byan 18 hp eninel Now can build fly /4-scale RIC model sleek little canard quality fit die-cut balsa ply parts good will really enjoy building kit Excellent plans instructions guide step-by-step snag-Tree rewarding building experi ence kit includes wood custom metal parts generous hardware package ABS cowl clear canopy.even scale documentation SURPRISE Quickie EASY TO FLY handles much like conventional sport-40 type model J U U U U U U U U U U U U U U U EEEEEEEEEEuEEE.E U U U U U U U U U U U U I U I U U DAVE ROBELENS PRONTO AND SUPER PRONTO HIGH QUALITY 48 SPAN KIT FOR 09 TO 25 ENGINES FEATURES AIowwirdesrgnwithligh wirrg sthbility arid excetent inverted pedrimarEe GenlletortlrenoviceFunfortlre expert versatle pefiurnarEe 46 hour raid-llre assembly begeirrer Precision machon cut SIB balsa plywcxxl add spruce Rolled full size plarre showirrg 11w creoplete wirrg Slepby-step iosthJcfroris easy assembly Formed mn lardrrg gear Exceptional small lieki performance May fiorr 1 3 clunnels Tested recommended arKi apprnved PJC Mrideler \~zine add Motel Aviation -July 1984 Reti $3995 Reti $4995 fle*r ader m yaf ekIIrut m srck dealer order direct post paid delivery Virginia residents add 40/ sales tax TIDEWATER HOBBY ENTERPRISES 1 Route 1 Box 2410 Lenexe Vrginia 23089 Phone 1804 966-5092 2 ** For Long Engine Life ** Use BRU LINE Air Cleaner Completely Fuel Proof Nylon Rubber Parts Cat No 102 Air Cleaner Coarse Cat No 202 Air Cleaner Fine Replacement Inserts Cat No 104 Pk/2 Inserts Coarse Cat No 204 Pk/2 Inserts Fine $225 $225 $195 $195 FITS MOST ENGINES 25 UP receiver batteries push button known Batt-Chek RX-1 manufactured Pro-Tune Corp Pro Tune has advertisement device page 144 check favorite hobby dealer call company 914 462-6452 4 Dave has two suggestions item No 4 Im going address sepa rately Requiring radio range-check control flutter-check battery-quality test contest certainly good suggestion same time feasible under taking Nats contestants already famil iar RC transmitter processing proce dures ensure outputs stated frequency Range battery checks should easily included takes manpower time right equipment Checks control surfaces associated linkage minimize likeli hood flutter during flight already requirement prior flight contests fly ins sanctioned International Mim ature Aircraft Association IMAA could similarly required AMAsanctioned contests However dont believe loss control due flutter common loss control due bat tery other radio equipment problems Daves suggestion should requirement redundancy event control battery failure also recommendation IMAA Aircraft Size & Safety Guidelines As alterna tive fail-safe devices avail able will close engine throttle event receiver batteries become weak during flight 5 placement pilots too close another several RC models flown simultaneously has often stat ed source self-generated radio terference writing column January 1986 issue MA arrived mail Lo behold Radio Tech nique column George Myers has wealth data resulting tests con cerning very subject Since Im electronics expert Im going make comments about would urge RCers read Georges January col umn pay attention what has say As suggests might want conduct tests own notify him results Im including questionnaire col umn solicit thorgghts need implement Dave Abbes suggestions However before fill answers questions Id like briefly discuss suggestions could implement ed such implementation believed necessary two responses Daves sug gestions mentioned trade associa tion may appropriate body improve current situation Dan Lieberman president RCHTA Continued page 20 18 Model Aviation U U U U U U U U U U U U U U U U U EU.. U.. EU SIG QUALITY FUELS Special Igmters Improve cold starting idle characteristicsU High Film Strength Additives increase lubricity provide maximum lean run protection * Special Detergents help prevent varnish promote clean burning * Rust Preventatives protect expensive engines corrosion SIG CHAMPION 2-STROKE FUEL FREIGHT FREE SHIPPING ON ORDERS OVER $1500COLLECT PINTQUARTGALLON 55GAL DRUM 0%Nitromethane$315$450$1050$19000 5%Nitromethane$365$525$1250$25800 10%Nitromethane$415$550$1450$32500 15%Nitromethane$430$625$1650$38500 25%Nitromethane$495$750$2095$52000 35%Nitromethane$575$875$2495$66000 SIGPREMIUM 4-STROKE FUEL 10%Nitromethane$415$550$1395$29500 15%Nitromethane$425$625$1595$35900 THE CHOICE OF CHAMPION FLYERS over 20 years SIG has blending fuel finest qualify ingreoierits anal able alcohol 995% pure very nest grade available nitromethane use tOO% pure get honest portion baneo % volume Aod maximum lubrication get perfect 5050 b end Bakers AA Castor Oil ann Klotz Technylate Racisg Oil protect expensive engines tbe nest qualityfuel can mane price Dont take word try some udge vo.iseifi See dealer first available order direct Call ____ 800-247-5008 toll free orders Latest Catalog $ 300 ____ SIG MANUFACTURING CO Montezuma IA 50171 V1S4 Prinen sanieci iflangewinoninuilne YOUR LOCAL HOBBY DEALER IF UNAVAILABLE LOCALLY SEND TO Add 75 shippingMichigan residents add 4% sales tax Bru Line Industries Inc PO Box 3786 Center Line Michigan 48015 7 L POSt CURE CYANOACRYLATE SPECIAL INTRODUCTORY OFFER ListSaleSavings 1 oz Fast Cure 3-5 Sec495$250% Off 2 oz Fast Cure 3-5 Sec895$39656% Off 1 oz Gap-Filling 5 Sec$249500/0 Off 2 oz Gap-Filling 5 Sec895$39656% Off OUR GUARANTEE TO YOU satisfied POSI-CURE please return unused portion within 30 days full refundNo questions asked SHELDONS HOBBY SHOP 3157 Alum Rock Ave Jose CA 95127 FOR ORDERS ONLY PLEASEVISK 800 228-3237408 251-0789 Out State INFO 408 251-0787 California SHIPPING per order Hours Mom-Wed Fri & Sat 930-530 FAST SERVICE Thur 930-900 1200-500 COD ADD $190 RC equipment manufacturers association Donald Reisman president Hobby Industry Association HIA represents manufacturers prod ucts use hobby sen timents improve RC equipment instruc tions standardize components RCHTA and/or HIA could coordinate combined effort manufacturers users latter could selected AMA because interest exper tise Some readers may aware already AMA Safety Commit tee existence committee com posed three membersJim McNeil Dave Brown Johnny Clemenswho also members AMA Executive Council has advisory board 17 members Thirteen advisory board members represent way anoth er RC model-flying activities other words what Im saying already have means examine merits Dave Abbes suggestions improving safety RC flight operations $10000 question whether really need additional rules guidelines improve safety RC model flying answers ques tions questionnaire will helpful determining such need simplify task response postcard simple Yes No opposite question number will suffice However have strong feelings -x PRECISION MADE EXPANDED BEAD POLYSTYRENE REPLACEMENT WING & STAB CORES FOR ALL POPULAR RIC AIRCRAFt OVER 250 DIFFERENT WINGS IN STOCK FOR IMMEDIATE DELIVERY SO IF YOU HAVE WRITE US ~AFAVORITEBIRDTHATNEEDSAWINGCALLOR CRYSTAL CLEAR THERMOFORMED CANOPIES 2 DRESS UP YOUR PLANE WITH NEW CANOPY FROM WING MFG TOP QUALITY TOOLING & MATERIAL MAKES THESE SECOND TO NONE WE HAVE LOTS OF SHAPES & SIZES IN STOCK WHICH FIT MOST KITS & SCRATCH BUILT MODELS L WING MFG PO BOX 33 CRYSTAL LAKE IL 60014 PhOne 615/459-0417 VISIT OUR OUTLET STORE AT 15 MORGAN STREET IN CRYSTAL LAKE IL SEND $350 FOR DESCRIPTIVE PRODUCT CATALOG FOAM WING CORES issues welcome put paper form letter will forward summary responses AMA Safety Committee consideration addition publishing results poll future Safety column publicly-owned flying sites December 1985 issue asked read ers inputs ensure fliers county- city-owned flying sites ade quately covered liability insurance published early response issue Russell Knetzger February 1986 column Since Ive several letters subject letter Albert Powell Long Island RC Society enclosed copy rules must observed order fly parks supervised Long Island State Park & Recreation Commis sion rules require flier apply permit costs $750 per month $4500 annually addition fee Commission requires applicant show proof he/she has liability insur ance coverage amount $500000 AMA membership provides double amount coverage certificate stating may obtained AMAchartered club chapter writing AMAHQ seems solution non insured flier problem see December 85 issue flying sites parks lobby Continued page 129 20 Model Aviation NFWUCT S WINGEE ALL YOU NEED Mount Swingee like hinge Completely built-in out sight No flexy torque rods ailerons just simple pushrods straight Swingee Use direct servo control-horn linkage away Kwick-links bell-cranks eliminate sloppy control surfaces scale soaring pattern pylon sport flyer built-in Swingee makes clean aerodynamic lines naturally improves both appearance performance Swingee made Delrin totally unaffected change temperature USA Dealer [AE rn/c mcJ PO Box 511 F HIGGINSVILLE MO 64037 816-584-7121 Dealer inquiries invited World distributor G L INTERNATIONAL AB PO Box 3459 5-162 03 VALLINGEY SWEDEN John Brown Santa Ana CA John sent copies 40 pages book called Modelmaking9 book edited Raymond F Yates well-known writer time article Model Submarine Radio Control did list author perhaps Yates himself just cant resist including submarine story though its heavy-weight RC gear wasnt suitable plane subject 8-ft-long 175-lb submarine radio controls steering electric motors propulsion transmitter 2-in spark gap abroad band frequencies receiver coherer detector Maximum range 300 feet highly-detailed drawings pho tos convincing no descrip tion public demonstration However annotation book pub lished time wireless work experimental nature prohibited United States Government wasnt too surprising US involved war time date 1918 during World War I surmise RC submarine project started before WW almost finished wireless prohibi tion prevented actual RC demonstra tions known whether later tests performed believed article published originally Evety day Engineering Magazine 1917 1918 Can anyone help solve mystery submarine model may have first hobby RC project US really dont know know model plane really what story about Summary now know precursors set stage invention hobby RC model planes gas engines gas models Browns Bassetts early 1 930s amateur radio hams knowledge interest hobby level direct application radio techniques military RC projects 1 920s demonstrated technical feas ibility no means offered direct transition hobby RC commercial radio industry pro vided some circuits components no direct help application toward hobby RC up modelers hams blend together results pre cursors working RC model plane next installment well see met challenge recount early stumbling steps first-ever RC compe tition 1937 National Contest Detroit References Zaic Frank Junior Aeronautics Year Book New York Model Aeronautics Publications 1934 2Ritchie Dave Maxwell Bassett First Gas Model Champion ModelAviation Septem ber 1983 Fabrney DS Rear Admiral USN ret Robert Strobell Americas First Pilotless Aircraft Aero Digest FR FLIUNT ROLLED PLANS UT PARTS Y 1 /2A FULL KIT $2795 A-B FULL KIT3995 B-C-B PRO KIT 4495 B-C-B FULL KIT 5995 SHIPPING $250 EA KIT PRE-PAY OR COD/CA RES ADD 6-1/2% TAX 4Mirick CB Wild Goose Chase USN Institute Proceedings Vol 72 Whole No 521 July 1946 Middlebrook Carlton Interview February 28 1985 6Sosic GV Tesla Father RC Model Aviation March 1976 7Miessner BF Early History Radio Guidance San Francisco San Francisco Press 1964 9DeSoto Clinton B 200 Meters Down W Hartford ARRL Inc 1936 9Yates Raymond F ed Modelmaking New York Norman W Henley Publishing Co 1919 Safety Preston Continued page 20 Park Authority city county etc pass ordinance would require use permit turn would require surance coverage According Russell Knetzger cheapest way obtaln lia bility insurance join AMA Most letters received subject addressed question deter flier AMA member March 1986 129 An entirely new generation controlhinges now available model builder unique design Swingee will benefit 11 i T II'I ELECTRIC POWER OR GLO-ENGINES PROP HUB ASSEMBLY # 10915 21 size engines electric motor equivalent Weight 85 grams$l5N PROP BLADES FOR HUB # 100 Available 7s 25 7x 3 7s 35 Bs 4 $400 per blade $600 per pair PROP HU3 ASSEMBLY # 110 049 051 engines electric motor equivalent Weight 5 grams $150 PROP BLADES FOR NUB # 110 lable 6x 3 $400 per blade $600 per pair PROP HUB ASSEMBLY # Ill 0 engines electric motor equivalent 20 grams $2000 PROP ULADES FOR HUB # lii lable 9 x 4 10 x 411 s 4 $5N per blade SlON per pair Send SSAE catalog sheet complete line features new Fabtronics Mark 3 CDl pointless system Once treat mill system wont settle anything less coupled 4 cycle have Best Two Worlds works equally well 2 cycles twins two cylindars model size engine unit comes pre-drilled disk sensor clamp mounting sensor engine 90 day warranty complete structions conversion timing procedure Unit operates 48 volt low current drain weight mere 2 oz size 2 x 2 x 75 inches Complete system comes ignition coil spark plug on/off switch ignition cable also available seperately Batteries cluded Please state engine size use ordering Converting ignition has ad vantages such tremendous saving fuel less mess no burned-out plugs bet ter idle name few Nearly engine can easily con verted can switch unit plane car boat helicopter another Installation very easy no special tools needed Automatic Spark Advance now available 4 cycle engines Complete system$6995 cash MO Certifed Check plus $300 P & H Personal checks take time clear Illinois residents please add tax Brochure ndable purchase FABTRONICS 375 Isle Royale Rd Galesburg IL 61401 TICK OFF TIMER Now Available 0-20 Seconds Fuel shut off Flood Off Auto rudder function Weight 02 Fuel line included 14 Limited supply EXTRA FUEL UNE TUBINGSO-- ft DIRECT ORDER ONLY Send Cash Check MO COD 83 extrs Calif 6% LENGTH7/ExtraTip *995 APPROX$125 ONE STEEL AND ONE BRASS TIP Send Check Money Order M & W MODELS PO Box 6827 Huntington Beach CA 92615 Add 150 Pont & Hand CA Res add 6% tax suggested method frequency con trol shown AMA rule book page 128 1986-87 book re quires insert AMA member ship card pocket frequency control board remove fre quency control clip must possession before turn trans mitter concerned about losing AMA cards system could amended permit using copy cards lieu originals prerequisite flying partic ular field membership club system identifying paid-up members used Northern Virginia RC Club worth considering Upon payment nual dues club issues colored stickers attachment members transmitters color changes year year issue printed stickers Proof AMA membership has provided NVRC members renew club memberships So presence appro priate sticker members transmitter signifies both current club AMA membership quick check trans mitter impound rack flying field readily identifies delinquent dues payment Servo-screw integrity few issues ago ran letter Peter Young alleged use self-tapping screws hold together two halves servo cases good practice may work loose because engine vibration during flight Another reader Jay Stevens has formed too experienced problem like Peter now uses dab epoxy screws prevent loosening As alternative epoxy Glen Grady Port St Lucie FL suggests using finger nail polish Glen has successfully used nail polish secure screws cameras used record data jet engines full-scale aircraft thinks nail polish will just effective epoxy securing servo screws will permit easier sqrew removal should servo need disassembled servicing Electric starters Before signing off month word caution use electric starters engines equipped spinner also comes Glen Grady witnessed acci dent fellow club member visit hospital have piece pro peller removed chest mod eler attempting start 40-size four-stroke equipped wooden prop no spinner Glen did state whether prop secured AMA prop nut letter described what happened follows starter used con stantly would spin off-center throwing rubber cone starter out just happened did time cone flew out engine fired up throttle wide open plane lurched forward starter because cone come out vibration starter spinnerless prop loosened grip airplane prop hit starter shattered sending piece wood chest about half inch Fortunately modeler inci dent seriously injured Neverthe less Glen suggests starters should used engine unless spinner used never start engine throttle wide open have add latter tip applies throttle-equipped engines Free Flight Power Control Line modelers careful Have safe month John Preston 12235 Tilden wood Dr Rockvile MD 20852 Radio Technique/Myers Continued page 41 Non-Aircraft band Now AMA anyone matter supposed go about organizing such diverse group what purpose agreed call meeting upcoming Toledo show industry special-interest groups eg cars boats discuss frequency problems 5 In technical session discus130 Model Aviation fl7HAMMER QUADRA-SCALE PzL P-23A KARAS Poish econ ard lgh bomber 95 rise lev0 ece pior erg t zrarrel obeai05 FII-sze pints 53h 00 ObrAOaid r U S Corn Io reassal ,zlOed LARRY GORDON 2sh0 GOLDEN SHORES CT FENTON MICH 48430 343 629-5786 JOHN TATONE 164 School St City CA 94014 4157563400
Edition: Model Aviation - 1986/03
Page Numbers: 14, 16, 18, 20, 129, 130
Preston ~p RC flying safe safe modeler shares concerns reader survey proposals solicited flying publicly owned sites RC SAFETY November 1985 issue Model Builder magazine contained letter see Bill Northrops Workbench page 6 publisher Dave Abbe expressing some concerns about safety RC model aircraft operation Dave cited number reasons criticism aimed RC equipment manufac turers news media national organization letter concluded following some personal thoughts five items 1 manufacturer does pro vide comprehensive operating instructions radio equipment may well com promising position should ever have Continued page 16 strongly recommend follow ing steps taken national radio control safety effort launched commit tee representatives national clubs modelers manufacturers suppli ers insurers develop maintain acceptable standards RC hobby sanctioned publicly-organized fashion targeted 1991 frequency rules implementation standards must include 1 uniform informative manufacturers operating instructions 2 Standardization manufacturers interchangeability parts wherever possi ble covering servos batteries switch harnesses RC format etc 3 Maintenance mandatory safety checks sanctioned flying sites load ed ESV measurement transmitter receiver batteries before flight use 4 Contest range checks control flutter certification added batteryquality test Requirement aircraft over certain size/weight have adequate safety redundancy built assure mini mum risk event control/battery failure 5 Proper stationing fliers points prevent harmonic interference between transmitters Before ask reader input Daves recommendations would like voice K II REE IN ThE U1TLES5X IS TJIE NEW FAT YOL4 OEI, AMP IN THE BI 50K ThE VY COMReJ4EAJSIVE 6PgATe INSTRUCflON l-1AIJUAL 14 Model Aviation Reader Questlonnaim Send letter postcard John Preston address end column answers questions 1 Would like see uniform informative operating instructions included new RC equipment 2 Would like see RC equipment manufacturers standardize products parts manufacturer could interchanged another manufacturer indicate following RO components would like see interchangeable 2a Servos 2b BatterIes 2c Switch harnesses 2d RC format 2e Other please state 3 Do believe RO flying sites flying operations controlled AMA chartered club should require condition transmitter receiver batteries checked before flight 4 Do believe following Items should subject mandatory check prior flight AMA-sanctioned contest 4a Radio range check 4b Battery TX & Rx quality chock 4c Likelihood control surfaces will subject flutter 4d Models over specified weight state what weight should have built-in safety redun dancy such backup Rx battery fall-safe device retard throttle event Rx battery failure 5 Do believe RO flying sites operated RO clubs chartered AMA should specify locations pilots model airplane air 6 Any other suggestions improve RC flying safety ptease state Show Colors BECAUSE WERE PROUD OF THEM take lot pride building model So guess color paint youre choosing finish take time put paint chip can Perfect Paint color youre buying color want . take guesswork out finishing P0 Box 2480 usky Ohio 44870 Ph 419 627-1877 So love work balsa wood want build airplane unique Quickie See dealer today available call 800-826-7042 toll free ORDERS ONLY h ST CROIX MODELS OX 279 S PARK FALLS WI 54552 misfortune named defend ant product liability suit stemming model-airplane-related accident Several such lawsuits involving nonmodel-related products appear have hinged question whether man ufacturer provided sufficient instructional material user together ade quate warnings what might result instructions followed regular job No dont work full time AMA have considerable involvement developing safety stand ards products Most stand ards have included sections concerning structions user cautionary statements alert user hazards associated product may obvious user average skill experience Most often development standards has spearheaded trade association Since such association ex ists RC equipment manufacturers might appropriate body consider need guidelines essential elements operating maintenance structions AMA should have voice committee undertakes job developing guidelines operating instructions since AMA association users products question think AMA appropriate associa tion lead such effort 2 appears Dave Abbe alone desire see standardization components assure interchangeabili ty SJ Casden expressed similar feelings letter editor Model Aviation page 10 January 1986 issue think also issue would best ad dressed trade association representing manufacturers Standardizing compo nents such connectors switch harness es servos may desirable users manufacturers may have good techni cal economic reasons wanting standardize Connectors goldplated pins might desirable some us may vital reliable operation equipment 3 requirement mandatory safety checks sanctioned flying sites sounds good first reading could certainly reduce probability crash resulting lack equipment maintenance such battery failure However Im sure what Dave means sanctioned flying sites Im assuming means flying fields operated AMA-chartered clubs mail receive appears some such clubs have difficulty just enforcing mandatory rule fliers should AMA members Enforce ment mandatory equipment checks might difficultor impossible opinion batteries likely checked checking procedure quick simple September 1985 safety column mentioned board device checking state Continued page 18 16 Model Aviation full-size Quickie remarkable homebuilt airplane achieves amaz ingl20mphand80mpgpowered byan 18 hp eninel Now can build fly /4-scale RIC model sleek little canard quality fit die-cut balsa ply parts good will really enjoy building kit Excellent plans instructions guide step-by-step snag-Tree rewarding building experi ence kit includes wood custom metal parts generous hardware package ABS cowl clear canopy.even scale documentation SURPRISE Quickie EASY TO FLY handles much like conventional sport-40 type model J U U U U U U U U U U U U U U U EEEEEEEEEEuEEE.E U U U U U U U U U U U U I U I U U DAVE ROBELENS PRONTO AND SUPER PRONTO HIGH QUALITY 48 SPAN KIT FOR 09 TO 25 ENGINES FEATURES AIowwirdesrgnwithligh wirrg sthbility arid excetent inverted pedrimarEe GenlletortlrenoviceFunfortlre expert versatle pefiurnarEe 46 hour raid-llre assembly begeirrer Precision machon cut SIB balsa plywcxxl add spruce Rolled full size plarre showirrg 11w creoplete wirrg Slepby-step iosthJcfroris easy assembly Formed mn lardrrg gear Exceptional small lieki performance May fiorr 1 3 clunnels Tested recommended arKi apprnved PJC Mrideler \~zine add Motel Aviation -July 1984 Reti $3995 Reti $4995 fle*r ader m yaf ekIIrut m srck dealer order direct post paid delivery Virginia residents add 40/ sales tax TIDEWATER HOBBY ENTERPRISES 1 Route 1 Box 2410 Lenexe Vrginia 23089 Phone 1804 966-5092 2 ** For Long Engine Life ** Use BRU LINE Air Cleaner Completely Fuel Proof Nylon Rubber Parts Cat No 102 Air Cleaner Coarse Cat No 202 Air Cleaner Fine Replacement Inserts Cat No 104 Pk/2 Inserts Coarse Cat No 204 Pk/2 Inserts Fine $225 $225 $195 $195 FITS MOST ENGINES 25 UP receiver batteries push button known Batt-Chek RX-1 manufactured Pro-Tune Corp Pro Tune has advertisement device page 144 check favorite hobby dealer call company 914 462-6452 4 Dave has two suggestions item No 4 Im going address sepa rately Requiring radio range-check control flutter-check battery-quality test contest certainly good suggestion same time feasible under taking Nats contestants already famil iar RC transmitter processing proce dures ensure outputs stated frequency Range battery checks should easily included takes manpower time right equipment Checks control surfaces associated linkage minimize likeli hood flutter during flight already requirement prior flight contests fly ins sanctioned International Mim ature Aircraft Association IMAA could similarly required AMAsanctioned contests However dont believe loss control due flutter common loss control due bat tery other radio equipment problems Daves suggestion should requirement redundancy event control battery failure also recommendation IMAA Aircraft Size & Safety Guidelines As alterna tive fail-safe devices avail able will close engine throttle event receiver batteries become weak during flight 5 placement pilots too close another several RC models flown simultaneously has often stat ed source self-generated radio terference writing column January 1986 issue MA arrived mail Lo behold Radio Tech nique column George Myers has wealth data resulting tests con cerning very subject Since Im electronics expert Im going make comments about would urge RCers read Georges January col umn pay attention what has say As suggests might want conduct tests own notify him results Im including questionnaire col umn solicit thorgghts need implement Dave Abbes suggestions However before fill answers questions Id like briefly discuss suggestions could implement ed such implementation believed necessary two responses Daves sug gestions mentioned trade associa tion may appropriate body improve current situation Dan Lieberman president RCHTA Continued page 20 18 Model Aviation U U U U U U U U U U U U U U U U U EU.. U.. EU SIG QUALITY FUELS Special Igmters Improve cold starting idle characteristicsU High Film Strength Additives increase lubricity provide maximum lean run protection * Special Detergents help prevent varnish promote clean burning * Rust Preventatives protect expensive engines corrosion SIG CHAMPION 2-STROKE FUEL FREIGHT FREE SHIPPING ON ORDERS OVER $1500COLLECT PINTQUARTGALLON 55GAL DRUM 0%Nitromethane$315$450$1050$19000 5%Nitromethane$365$525$1250$25800 10%Nitromethane$415$550$1450$32500 15%Nitromethane$430$625$1650$38500 25%Nitromethane$495$750$2095$52000 35%Nitromethane$575$875$2495$66000 SIGPREMIUM 4-STROKE FUEL 10%Nitromethane$415$550$1395$29500 15%Nitromethane$425$625$1595$35900 THE CHOICE OF CHAMPION FLYERS over 20 years SIG has blending fuel finest qualify ingreoierits anal able alcohol 995% pure very nest grade available nitromethane use tOO% pure get honest portion baneo % volume Aod maximum lubrication get perfect 5050 b end Bakers AA Castor Oil ann Klotz Technylate Racisg Oil protect expensive engines tbe nest qualityfuel can mane price Dont take word try some udge vo.iseifi See dealer first available order direct Call ____ 800-247-5008 toll free orders Latest Catalog $ 300 ____ SIG MANUFACTURING CO Montezuma IA 50171 V1S4 Prinen sanieci iflangewinoninuilne YOUR LOCAL HOBBY DEALER IF UNAVAILABLE LOCALLY SEND TO Add 75 shippingMichigan residents add 4% sales tax Bru Line Industries Inc PO Box 3786 Center Line Michigan 48015 7 L POSt CURE CYANOACRYLATE SPECIAL INTRODUCTORY OFFER ListSaleSavings 1 oz Fast Cure 3-5 Sec495$250% Off 2 oz Fast Cure 3-5 Sec895$39656% Off 1 oz Gap-Filling 5 Sec$249500/0 Off 2 oz Gap-Filling 5 Sec895$39656% Off OUR GUARANTEE TO YOU satisfied POSI-CURE please return unused portion within 30 days full refundNo questions asked SHELDONS HOBBY SHOP 3157 Alum Rock Ave Jose CA 95127 FOR ORDERS ONLY PLEASEVISK 800 228-3237408 251-0789 Out State INFO 408 251-0787 California SHIPPING per order Hours Mom-Wed Fri & Sat 930-530 FAST SERVICE Thur 930-900 1200-500 COD ADD $190 RC equipment manufacturers association Donald Reisman president Hobby Industry Association HIA represents manufacturers prod ucts use hobby sen timents improve RC equipment instruc tions standardize components RCHTA and/or HIA could coordinate combined effort manufacturers users latter could selected AMA because interest exper tise Some readers may aware already AMA Safety Commit tee existence committee com posed three membersJim McNeil Dave Brown Johnny Clemenswho also members AMA Executive Council has advisory board 17 members Thirteen advisory board members represent way anoth er RC model-flying activities other words what Im saying already have means examine merits Dave Abbes suggestions improving safety RC flight operations $10000 question whether really need additional rules guidelines improve safety RC model flying answers ques tions questionnaire will helpful determining such need simplify task response postcard simple Yes No opposite question number will suffice However have strong feelings -x PRECISION MADE EXPANDED BEAD POLYSTYRENE REPLACEMENT WING & STAB CORES FOR ALL POPULAR RIC AIRCRAFt OVER 250 DIFFERENT WINGS IN STOCK FOR IMMEDIATE DELIVERY SO IF YOU HAVE WRITE US ~AFAVORITEBIRDTHATNEEDSAWINGCALLOR CRYSTAL CLEAR THERMOFORMED CANOPIES 2 DRESS UP YOUR PLANE WITH NEW CANOPY FROM WING MFG TOP QUALITY TOOLING & MATERIAL MAKES THESE SECOND TO NONE WE HAVE LOTS OF SHAPES & SIZES IN STOCK WHICH FIT MOST KITS & SCRATCH BUILT MODELS L WING MFG PO BOX 33 CRYSTAL LAKE IL 60014 PhOne 615/459-0417 VISIT OUR OUTLET STORE AT 15 MORGAN STREET IN CRYSTAL LAKE IL SEND $350 FOR DESCRIPTIVE PRODUCT CATALOG FOAM WING CORES issues welcome put paper form letter will forward summary responses AMA Safety Committee consideration addition publishing results poll future Safety column publicly-owned flying sites December 1985 issue asked read ers inputs ensure fliers county- city-owned flying sites ade quately covered liability insurance published early response issue Russell Knetzger February 1986 column Since Ive several letters subject letter Albert Powell Long Island RC Society enclosed copy rules must observed order fly parks supervised Long Island State Park & Recreation Commis sion rules require flier apply permit costs $750 per month $4500 annually addition fee Commission requires applicant show proof he/she has liability insur ance coverage amount $500000 AMA membership provides double amount coverage certificate stating may obtained AMAchartered club chapter writing AMAHQ seems solution non insured flier problem see December 85 issue flying sites parks lobby Continued page 129 20 Model Aviation NFWUCT S WINGEE ALL YOU NEED Mount Swingee like hinge Completely built-in out sight No flexy torque rods ailerons just simple pushrods straight Swingee Use direct servo control-horn linkage away Kwick-links bell-cranks eliminate sloppy control surfaces scale soaring pattern pylon sport flyer built-in Swingee makes clean aerodynamic lines naturally improves both appearance performance Swingee made Delrin totally unaffected change temperature USA Dealer [AE rn/c mcJ PO Box 511 F HIGGINSVILLE MO 64037 816-584-7121 Dealer inquiries invited World distributor G L INTERNATIONAL AB PO Box 3459 5-162 03 VALLINGEY SWEDEN John Brown Santa Ana CA John sent copies 40 pages book called Modelmaking9 book edited Raymond F Yates well-known writer time article Model Submarine Radio Control did list author perhaps Yates himself just cant resist including submarine story though its heavy-weight RC gear wasnt suitable plane subject 8-ft-long 175-lb submarine radio controls steering electric motors propulsion transmitter 2-in spark gap abroad band frequencies receiver coherer detector Maximum range 300 feet highly-detailed drawings pho tos convincing no descrip tion public demonstration However annotation book pub lished time wireless work experimental nature prohibited United States Government wasnt too surprising US involved war time date 1918 during World War I surmise RC submarine project started before WW almost finished wireless prohibi tion prevented actual RC demonstra tions known whether later tests performed believed article published originally Evety day Engineering Magazine 1917 1918 Can anyone help solve mystery submarine model may have first hobby RC project US really dont know know model plane really what story about Summary now know precursors set stage invention hobby RC model planes gas engines gas models Browns Bassetts early 1 930s amateur radio hams knowledge interest hobby level direct application radio techniques military RC projects 1 920s demonstrated technical feas ibility no means offered direct transition hobby RC commercial radio industry pro vided some circuits components no direct help application toward hobby RC up modelers hams blend together results pre cursors working RC model plane next installment well see met challenge recount early stumbling steps first-ever RC compe tition 1937 National Contest Detroit References Zaic Frank Junior Aeronautics Year Book New York Model Aeronautics Publications 1934 2Ritchie Dave Maxwell Bassett First Gas Model Champion ModelAviation Septem ber 1983 Fabrney DS Rear Admiral USN ret Robert Strobell Americas First Pilotless Aircraft Aero Digest FR FLIUNT ROLLED PLANS UT PARTS Y 1 /2A FULL KIT $2795 A-B FULL KIT3995 B-C-B PRO KIT 4495 B-C-B FULL KIT 5995 SHIPPING $250 EA KIT PRE-PAY OR COD/CA RES ADD 6-1/2% TAX 4Mirick CB Wild Goose Chase USN Institute Proceedings Vol 72 Whole No 521 July 1946 Middlebrook Carlton Interview February 28 1985 6Sosic GV Tesla Father RC Model Aviation March 1976 7Miessner BF Early History Radio Guidance San Francisco San Francisco Press 1964 9DeSoto Clinton B 200 Meters Down W Hartford ARRL Inc 1936 9Yates Raymond F ed Modelmaking New York Norman W Henley Publishing Co 1919 Safety Preston Continued page 20 Park Authority city county etc pass ordinance would require use permit turn would require surance coverage According Russell Knetzger cheapest way obtaln lia bility insurance join AMA Most letters received subject addressed question deter flier AMA member March 1986 129 An entirely new generation controlhinges now available model builder unique design Swingee will benefit 11 i T II'I ELECTRIC POWER OR GLO-ENGINES PROP HUB ASSEMBLY # 10915 21 size engines electric motor equivalent Weight 85 grams$l5N PROP BLADES FOR HUB # 100 Available 7s 25 7x 3 7s 35 Bs 4 $400 per blade $600 per pair PROP HU3 ASSEMBLY # 110 049 051 engines electric motor equivalent Weight 5 grams $150 PROP BLADES FOR NUB # 110 lable 6x 3 $400 per blade $600 per pair PROP HUB ASSEMBLY # Ill 0 engines electric motor equivalent 20 grams $2000 PROP ULADES FOR HUB # lii lable 9 x 4 10 x 411 s 4 $5N per blade SlON per pair Send SSAE catalog sheet complete line features new Fabtronics Mark 3 CDl pointless system Once treat mill system wont settle anything less coupled 4 cycle have Best Two Worlds works equally well 2 cycles twins two cylindars model size engine unit comes pre-drilled disk sensor clamp mounting sensor engine 90 day warranty complete structions conversion timing procedure Unit operates 48 volt low current drain weight mere 2 oz size 2 x 2 x 75 inches Complete system comes ignition coil spark plug on/off switch ignition cable also available seperately Batteries cluded Please state engine size use ordering Converting ignition has ad vantages such tremendous saving fuel less mess no burned-out plugs bet ter idle name few Nearly engine can easily con verted can switch unit plane car boat helicopter another Installation very easy no special tools needed Automatic Spark Advance now available 4 cycle engines Complete system$6995 cash MO Certifed Check plus $300 P & H Personal checks take time clear Illinois residents please add tax Brochure ndable purchase FABTRONICS 375 Isle Royale Rd Galesburg IL 61401 TICK OFF TIMER Now Available 0-20 Seconds Fuel shut off Flood Off Auto rudder function Weight 02 Fuel line included 14 Limited supply EXTRA FUEL UNE TUBINGSO-- ft DIRECT ORDER ONLY Send Cash Check MO COD 83 extrs Calif 6% LENGTH7/ExtraTip *995 APPROX$125 ONE STEEL AND ONE BRASS TIP Send Check Money Order M & W MODELS PO Box 6827 Huntington Beach CA 92615 Add 150 Pont & Hand CA Res add 6% tax suggested method frequency con trol shown AMA rule book page 128 1986-87 book re quires insert AMA member ship card pocket frequency control board remove fre quency control clip must possession before turn trans mitter concerned about losing AMA cards system could amended permit using copy cards lieu originals prerequisite flying partic ular field membership club system identifying paid-up members used Northern Virginia RC Club worth considering Upon payment nual dues club issues colored stickers attachment members transmitters color changes year year issue printed stickers Proof AMA membership has provided NVRC members renew club memberships So presence appro priate sticker members transmitter signifies both current club AMA membership quick check trans mitter impound rack flying field readily identifies delinquent dues payment Servo-screw integrity few issues ago ran letter Peter Young alleged use self-tapping screws hold together two halves servo cases good practice may work loose because engine vibration during flight Another reader Jay Stevens has formed too experienced problem like Peter now uses dab epoxy screws prevent loosening As alternative epoxy Glen Grady Port St Lucie FL suggests using finger nail polish Glen has successfully used nail polish secure screws cameras used record data jet engines full-scale aircraft thinks nail polish will just effective epoxy securing servo screws will permit easier sqrew removal should servo need disassembled servicing Electric starters Before signing off month word caution use electric starters engines equipped spinner also comes Glen Grady witnessed acci dent fellow club member visit hospital have piece pro peller removed chest mod eler attempting start 40-size four-stroke equipped wooden prop no spinner Glen did state whether prop secured AMA prop nut letter described what happened follows starter used con stantly would spin off-center throwing rubber cone starter out just happened did time cone flew out engine fired up throttle wide open plane lurched forward starter because cone come out vibration starter spinnerless prop loosened grip airplane prop hit starter shattered sending piece wood chest about half inch Fortunately modeler inci dent seriously injured Neverthe less Glen suggests starters should used engine unless spinner used never start engine throttle wide open have add latter tip applies throttle-equipped engines Free Flight Power Control Line modelers careful Have safe month John Preston 12235 Tilden wood Dr Rockvile MD 20852 Radio Technique/Myers Continued page 41 Non-Aircraft band Now AMA anyone matter supposed go about organizing such diverse group what purpose agreed call meeting upcoming Toledo show industry special-interest groups eg cars boats discuss frequency problems 5 In technical session discus130 Model Aviation fl7HAMMER QUADRA-SCALE PzL P-23A KARAS Poish econ ard lgh bomber 95 rise lev0 ece pior erg t zrarrel obeai05 FII-sze pints 53h 00 ObrAOaid r U S Corn Io reassal ,zlOed LARRY GORDON 2sh0 GOLDEN SHORES CT FENTON MICH 48430 343 629-5786 JOHN TATONE 164 School St City CA 94014 4157563400